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Finding the Fourth Proportional to 657,851.97, 907,785.05 and 371,400.33

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Solution

The fourth proportional to 657,851.97, 907,785.05 and 371,400.33 is: 512,503.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,851.97 : 907,785.05 = 371,400.33 : x
  2. Step 2: Convert to fraction form
    657,851.97/907,785.05 = 371,400.33/x
  3. Step 3: Cross multiply
    657,851.97x = 907,785.05 × 371,400.33
  4. Step 4: Simplify right side
    657,851.97x = 337,151,665,282.07
  5. Step 5: Solve for x
    x = 337,151,665,282.07/657,851.97
  6. Step 6: Final answer
    x = 512,503.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.