Home / 657,943.68-907,961.28-356,138.88

Finding the Fourth Proportional to 657,943.68, 907,961.28 and 356,138.88

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Solution

The fourth proportional to 657,943.68, 907,961.28 and 356,138.88 is: 491,471.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,943.68 : 907,961.28 = 356,138.88 : x
  2. Step 2: Convert to fraction form
    657,943.68/907,961.28 = 356,138.88/x
  3. Step 3: Cross multiply
    657,943.68x = 907,961.28 × 356,138.88
  4. Step 4: Simplify right side
    657,943.68x = 323,360,313,342.57
  5. Step 5: Solve for x
    x = 323,360,313,342.57/657,943.68
  6. Step 6: Final answer
    x = 491,471.11

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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.