Home / 687,232.20-1,029,098.70-655,739.40

Finding the Fourth Proportional to 687,232.20, 1,029,098.70 and 655,739.40

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Solution

The fourth proportional to 687,232.20, 1,029,098.70 and 655,739.40 is: 981,939.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,232.20 : 1,029,098.70 = 655,739.40 : x
  2. Step 2: Convert to fraction form
    687,232.20/1,029,098.70 = 655,739.40/x
  3. Step 3: Cross multiply
    687,232.20x = 1,029,098.70 × 655,739.40
  4. Step 4: Simplify right side
    687,232.20x = 674,820,564,078.78
  5. Step 5: Solve for x
    x = 674,820,564,078.78/687,232.20
  6. Step 6: Final answer
    x = 981,939.68

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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.