Home / 887,687.70-1,331,531.55-390,023.70

Finding the Fourth Proportional to 887,687.70, 1,331,531.55 and 390,023.70

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Solution

The fourth proportional to 887,687.70, 1,331,531.55 and 390,023.70 is: 585,035.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,687.70 : 1,331,531.55 = 390,023.70 : x
  2. Step 2: Convert to fraction form
    887,687.70/1,331,531.55 = 390,023.70/x
  3. Step 3: Cross multiply
    887,687.70x = 1,331,531.55 × 390,023.70
  4. Step 4: Simplify right side
    887,687.70x = 519,328,861,797.74
  5. Step 5: Solve for x
    x = 519,328,861,797.74/887,687.70
  6. Step 6: Final answer
    x = 585,035.55

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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.