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Finding the Fourth Proportional to 516,859.20, 773,733.60 and 454,651.20

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Solution

The fourth proportional to 516,859.20, 773,733.60 and 454,651.20 is: 680,608.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,859.20 : 773,733.60 = 454,651.20 : x
  2. Step 2: Convert to fraction form
    516,859.20/773,733.60 = 454,651.20/x
  3. Step 3: Cross multiply
    516,859.20x = 773,733.60 × 454,651.20
  4. Step 4: Simplify right side
    516,859.20x = 351,778,909,720.32
  5. Step 5: Solve for x
    x = 351,778,909,720.32/516,859.20
  6. Step 6: Final answer
    x = 680,608.78

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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.