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Finding the Fourth Proportional to 659,750.72, 909,854.88 and 557,989.52

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Solution

The fourth proportional to 659,750.72, 909,854.88 and 557,989.52 is: 769,517.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,750.72 : 909,854.88 = 557,989.52 : x
  2. Step 2: Convert to fraction form
    659,750.72/909,854.88 = 557,989.52/x
  3. Step 3: Cross multiply
    659,750.72x = 909,854.88 × 557,989.52
  4. Step 4: Simplify right side
    659,750.72x = 507,689,487,760.86
  5. Step 5: Solve for x
    x = 507,689,487,760.86/659,750.72
  6. Step 6: Final answer
    x = 769,517.14

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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.