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Finding the Fourth Proportional to 631,711.54, 871,760.50 and 359,779.42

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Solution

The fourth proportional to 631,711.54, 871,760.50 and 359,779.42 is: 496,494.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,711.54 : 871,760.50 = 359,779.42 : x
  2. Step 2: Convert to fraction form
    631,711.54/871,760.50 = 359,779.42/x
  3. Step 3: Cross multiply
    631,711.54x = 871,760.50 × 359,779.42
  4. Step 4: Simplify right side
    631,711.54x = 313,641,487,068.91
  5. Step 5: Solve for x
    x = 313,641,487,068.91/631,711.54
  6. Step 6: Final answer
    x = 496,494.79

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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.