Home / 1,123,632,002.70-1,685,448,004.05-987,583,106.70

Finding the Fourth Proportional to 1,123,632,002.70, 1,685,448,004.05 and 987,583,106.70

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Solution

The fourth proportional to 1,123,632,002.70, 1,685,448,004.05 and 987,583,106.70 is: 1,481,374,660.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,632,002.70 : 1,685,448,004.05 = 987,583,106.70 : x
  2. Step 2: Convert to fraction form
    1,123,632,002.70/1,685,448,004.05 = 987,583,106.70/x
  3. Step 3: Cross multiply
    1,123,632,002.70x = 1,685,448,004.05 × 987,583,106.70
  4. Step 4: Simplify right side
    1,123,632,002.70x = 1,664,519,976,021,013,248
  5. Step 5: Solve for x
    x = 1,664,519,976,021,013,248/1,123,632,002.70
  6. Step 6: Final answer
    x = 1,481,374,660.05

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Half scale
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Double scale
Find fourth proportional to 1,123,632,003.70, 1,685,448,005.55 and 987,583,107.70
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.