Home / 687,200.70-1,029,051.45-655,707.90

Finding the Fourth Proportional to 687,200.70, 1,029,051.45 and 655,707.90

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Solution

The fourth proportional to 687,200.70, 1,029,051.45 and 655,707.90 is: 981,892.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,200.70 : 1,029,051.45 = 655,707.90 : x
  2. Step 2: Convert to fraction form
    687,200.70/1,029,051.45 = 655,707.90/x
  3. Step 3: Cross multiply
    687,200.70x = 1,029,051.45 × 655,707.90
  4. Step 4: Simplify right side
    687,200.70x = 674,757,165,271.46
  5. Step 5: Solve for x
    x = 674,757,165,271.46/687,200.70
  6. Step 6: Final answer
    x = 981,892.43

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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.