Home / 659,023.25-988,540.13-431,510.65

Finding the Fourth Proportional to 659,023.25, 988,540.13 and 431,510.65

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Solution

The fourth proportional to 659,023.25, 988,540.13 and 431,510.65 is: 647,269.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,023.25 : 988,540.13 = 431,510.65 : x
  2. Step 2: Convert to fraction form
    659,023.25/988,540.13 = 431,510.65/x
  3. Step 3: Cross multiply
    659,023.25x = 988,540.13 × 431,510.65
  4. Step 4: Simplify right side
    659,023.25x = 426,565,592,654.81
  5. Step 5: Solve for x
    x = 426,565,592,654.81/659,023.25
  6. Step 6: Final answer
    x = 647,269.42

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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.