Home / 724,874.80-1,087,312.20-689,882.80

Finding the Fourth Proportional to 724,874.80, 1,087,312.20 and 689,882.80

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Solution

The fourth proportional to 724,874.80, 1,087,312.20 and 689,882.80 is: 1,034,824.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,874.80 : 1,087,312.20 = 689,882.80 : x
  2. Step 2: Convert to fraction form
    724,874.80/1,087,312.20 = 689,882.80/x
  3. Step 3: Cross multiply
    724,874.80x = 1,087,312.20 × 689,882.80
  4. Step 4: Simplify right side
    724,874.80x = 750,117,985,010.16
  5. Step 5: Solve for x
    x = 750,117,985,010.16/724,874.80
  6. Step 6: Final answer
    x = 1,034,824.20

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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.