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Finding the Fourth Proportional to 521,380.52, 719,337.78 and 291,903.96

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Solution

The fourth proportional to 521,380.52, 719,337.78 and 291,903.96 is: 402,733.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,380.52 : 719,337.78 = 291,903.96 : x
  2. Step 2: Convert to fraction form
    521,380.52/719,337.78 = 291,903.96/x
  3. Step 3: Cross multiply
    521,380.52x = 719,337.78 × 291,903.96
  4. Step 4: Simplify right side
    521,380.52x = 209,977,546,559.61
  5. Step 5: Solve for x
    x = 209,977,546,559.61/521,380.52
  6. Step 6: Final answer
    x = 402,733.78

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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.