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Finding the Fourth Proportional to 518,620.80, 777,931.20 and 496,502.40

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Solution

The fourth proportional to 518,620.80, 777,931.20 and 496,502.40 is: 744,753.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,620.80 : 777,931.20 = 496,502.40 : x
  2. Step 2: Convert to fraction form
    518,620.80/777,931.20 = 496,502.40/x
  3. Step 3: Cross multiply
    518,620.80x = 777,931.20 × 496,502.40
  4. Step 4: Simplify right side
    518,620.80x = 386,244,707,834.88
  5. Step 5: Solve for x
    x = 386,244,707,834.88/518,620.80
  6. Step 6: Final answer
    x = 744,753.60

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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.