Home / 629,856,769.80-944,785,154.70-400,841,128.20

Finding the Fourth Proportional to 629,856,769.80, 944,785,154.70 and 400,841,128.20

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Solution

The fourth proportional to 629,856,769.80, 944,785,154.70 and 400,841,128.20 is: 601,261,692.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,856,769.80 : 944,785,154.70 = 400,841,128.20 : x
  2. Step 2: Convert to fraction form
    629,856,769.80/944,785,154.70 = 400,841,128.20/x
  3. Step 3: Cross multiply
    629,856,769.80x = 944,785,154.70 × 400,841,128.20
  4. Step 4: Simplify right side
    629,856,769.80x = 378,708,747,316,559,552
  5. Step 5: Solve for x
    x = 378,708,747,316,559,552/629,856,769.80
  6. Step 6: Final answer
    x = 601,261,692.30

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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.