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Finding the Fourth Proportional to 657,775.71, 907,730.12 and 371,298.27

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Solution

The fourth proportional to 657,775.71, 907,730.12 and 371,298.27 is: 512,391.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,775.71 : 907,730.12 = 371,298.27 : x
  2. Step 2: Convert to fraction form
    657,775.71/907,730.12 = 371,298.27/x
  3. Step 3: Cross multiply
    657,775.71x = 907,730.12 × 371,298.27
  4. Step 4: Simplify right side
    657,775.71x = 337,038,621,326.40
  5. Step 5: Solve for x
    x = 337,038,621,326.40/657,775.71
  6. Step 6: Final answer
    x = 512,391.41

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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.