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Finding the Fourth Proportional to 659,452.76, 909,755.88 and 387,397.92

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Solution

The fourth proportional to 659,452.76, 909,755.88 and 387,397.92 is: 534,439.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,452.76 : 909,755.88 = 387,397.92 : x
  2. Step 2: Convert to fraction form
    659,452.76/909,755.88 = 387,397.92/x
  3. Step 3: Cross multiply
    659,452.76x = 909,755.88 × 387,397.92
  4. Step 4: Simplify right side
    659,452.76x = 352,437,535,619.77
  5. Step 5: Solve for x
    x = 352,437,535,619.77/659,452.76
  6. Step 6: Final answer
    x = 534,439.40

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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.