Home / 724,891.80-1,087,337.70-689,899.80

Finding the Fourth Proportional to 724,891.80, 1,087,337.70 and 689,899.80

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Solution

The fourth proportional to 724,891.80, 1,087,337.70 and 689,899.80 is: 1,034,849.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,891.80 : 1,087,337.70 = 689,899.80 : x
  2. Step 2: Convert to fraction form
    724,891.80/1,087,337.70 = 689,899.80/x
  3. Step 3: Cross multiply
    724,891.80x = 1,087,337.70 × 689,899.80
  4. Step 4: Simplify right side
    724,891.80x = 750,154,061,762.46
  5. Step 5: Solve for x
    x = 750,154,061,762.46/724,891.80
  6. Step 6: Final answer
    x = 1,034,849.70

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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.