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Finding the Fourth Proportional to 640,597.48, 961,561.08 and 371,251.86

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Solution

The fourth proportional to 640,597.48, 961,561.08 and 371,251.86 is: 557,263.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,597.48 : 961,561.08 = 371,251.86 : x
  2. Step 2: Convert to fraction form
    640,597.48/961,561.08 = 371,251.86/x
  3. Step 3: Cross multiply
    640,597.48x = 961,561.08 × 371,251.86
  4. Step 4: Simplify right side
    640,597.48x = 356,981,344,451.66
  5. Step 5: Solve for x
    x = 356,981,344,451.66/640,597.48
  6. Step 6: Final answer
    x = 557,263.11

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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.