Home / 657,931.52-985,342.68-321,202.78

Finding the Fourth Proportional to 657,931.52, 985,342.68 and 321,202.78

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Solution

The fourth proportional to 657,931.52, 985,342.68 and 321,202.78 is: 481,045.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,931.52 : 985,342.68 = 321,202.78 : x
  2. Step 2: Convert to fraction form
    657,931.52/985,342.68 = 321,202.78/x
  3. Step 3: Cross multiply
    657,931.52x = 985,342.68 × 321,202.78
  4. Step 4: Simplify right side
    657,931.52x = 316,494,803,141.94
  5. Step 5: Solve for x
    x = 316,494,803,141.94/657,931.52
  6. Step 6: Final answer
    x = 481,045.21

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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.