Home / 1,239,931.70-1,859,897.55-814,778.90

Finding the Fourth Proportional to 1,239,931.70, 1,859,897.55 and 814,778.90

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Solution

The fourth proportional to 1,239,931.70, 1,859,897.55 and 814,778.90 is: 1,222,168.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,931.70 : 1,859,897.55 = 814,778.90 : x
  2. Step 2: Convert to fraction form
    1,239,931.70/1,859,897.55 = 814,778.90/x
  3. Step 3: Cross multiply
    1,239,931.70x = 1,859,897.55 × 814,778.90
  4. Step 4: Simplify right side
    1,239,931.70x = 1,515,405,279,901.70
  5. Step 5: Solve for x
    x = 1,515,405,279,901.70/1,239,931.70
  6. Step 6: Final answer
    x = 1,222,168.35

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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.