Home / 659,027.75-988,546.91-431,515.17

Finding the Fourth Proportional to 659,027.75, 988,546.91 and 431,515.17

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Solution

The fourth proportional to 659,027.75, 988,546.91 and 431,515.17 is: 647,276.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,027.75 : 988,546.91 = 431,515.17 : x
  2. Step 2: Convert to fraction form
    659,027.75/988,546.91 = 431,515.17/x
  3. Step 3: Cross multiply
    659,027.75x = 988,546.91 × 431,515.17
  4. Step 4: Simplify right side
    659,027.75x = 426,572,985,764.05
  5. Step 5: Solve for x
    x = 426,572,985,764.05/659,027.75
  6. Step 6: Final answer
    x = 647,276.22

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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.