Home / 1,123,632,002.05-1,685,448,003.08-919,390,696.45

Finding the Fourth Proportional to 1,123,632,002.05, 1,685,448,003.08 and 919,390,696.45

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Solution

The fourth proportional to 1,123,632,002.05, 1,685,448,003.08 and 919,390,696.45 is: 1,379,086,044.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,632,002.05 : 1,685,448,003.08 = 919,390,696.45 : x
  2. Step 2: Convert to fraction form
    1,123,632,002.05/1,685,448,003.08 = 919,390,696.45/x
  3. Step 3: Cross multiply
    1,123,632,002.05x = 1,685,448,003.08 × 919,390,696.45
  4. Step 4: Simplify right side
    1,123,632,002.05x = 1,549,585,213,381,982,976
  5. Step 5: Solve for x
    x = 1,549,585,213,381,982,976/1,123,632,002.05
  6. Step 6: Final answer
    x = 1,379,086,044.68

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Double scale
Find fourth proportional to 1,123,632,003.05, 1,685,448,004.58 and 919,390,697.45
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.