Home / 687,234.20-1,029,101.70-655,741.40

Finding the Fourth Proportional to 687,234.20, 1,029,101.70 and 655,741.40

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Solution

The fourth proportional to 687,234.20, 1,029,101.70 and 655,741.40 is: 981,942.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,234.20 : 1,029,101.70 = 655,741.40 : x
  2. Step 2: Convert to fraction form
    687,234.20/1,029,101.70 = 655,741.40/x
  3. Step 3: Cross multiply
    687,234.20x = 1,029,101.70 × 655,741.40
  4. Step 4: Simplify right side
    687,234.20x = 674,824,589,500.38
  5. Step 5: Solve for x
    x = 674,824,589,500.38/687,234.20
  6. Step 6: Final answer
    x = 981,942.68

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1.5x scale

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.