Home / 687,247.20-1,029,121.20-655,754.40

Finding the Fourth Proportional to 687,247.20, 1,029,121.20 and 655,754.40

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Solution

The fourth proportional to 687,247.20, 1,029,121.20 and 655,754.40 is: 981,962.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,247.20 : 1,029,121.20 = 655,754.40 : x
  2. Step 2: Convert to fraction form
    687,247.20/1,029,121.20 = 655,754.40/x
  3. Step 3: Cross multiply
    687,247.20x = 1,029,121.20 × 655,754.40
  4. Step 4: Simplify right side
    687,247.20x = 674,850,755,033.28
  5. Step 5: Solve for x
    x = 674,850,755,033.28/687,247.20
  6. Step 6: Final answer
    x = 981,962.17

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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.