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Finding the Fourth Proportional to 521,664.80, 782,302.80 and 363,423.20

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Solution

The fourth proportional to 521,664.80, 782,302.80 and 363,423.20 is: 544,999.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,664.80 : 782,302.80 = 363,423.20 : x
  2. Step 2: Convert to fraction form
    521,664.80/782,302.80 = 363,423.20/x
  3. Step 3: Cross multiply
    521,664.80x = 782,302.80 × 363,423.20
  4. Step 4: Simplify right side
    521,664.80x = 284,306,986,944.96
  5. Step 5: Solve for x
    x = 284,306,986,944.96/521,664.80
  6. Step 6: Final answer
    x = 544,999.37

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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.