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Finding the Fourth Proportional to 521,552.80, 781,162.80 and 451,568.80

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Solution

The fourth proportional to 521,552.80, 781,162.80 and 451,568.80 is: 676,343.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,552.80 : 781,162.80 = 451,568.80 : x
  2. Step 2: Convert to fraction form
    521,552.80/781,162.80 = 451,568.80/x
  3. Step 3: Cross multiply
    521,552.80x = 781,162.80 × 451,568.80
  4. Step 4: Simplify right side
    521,552.80x = 352,748,748,200.64
  5. Step 5: Solve for x
    x = 352,748,748,200.64/521,552.80
  6. Step 6: Final answer
    x = 676,343.31

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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.