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Finding the Fourth Proportional to 521,004.62, 719,025 and 291,584.90

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Solution

The fourth proportional to 521,004.62, 719,025 and 291,584.90 is: 402,408.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,004.62 : 719,025 = 291,584.90 : x
  2. Step 2: Convert to fraction form
    521,004.62/719,025 = 291,584.90/x
  3. Step 3: Cross multiply
    521,004.62x = 719,025 × 291,584.90
  4. Step 4: Simplify right side
    521,004.62x = 209,656,832,722.50
  5. Step 5: Solve for x
    x = 209,656,832,722.50/521,004.62
  6. Step 6: Final answer
    x = 402,408.78

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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.