Home / 724,862.80-1,087,294.20-689,870.80

Finding the Fourth Proportional to 724,862.80, 1,087,294.20 and 689,870.80

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Solution

The fourth proportional to 724,862.80, 1,087,294.20 and 689,870.80 is: 1,034,806.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,862.80 : 1,087,294.20 = 689,870.80 : x
  2. Step 2: Convert to fraction form
    724,862.80/1,087,294.20 = 689,870.80/x
  3. Step 3: Cross multiply
    724,862.80x = 1,087,294.20 × 689,870.80
  4. Step 4: Simplify right side
    724,862.80x = 750,092,519,589.36
  5. Step 5: Solve for x
    x = 750,092,519,589.36/724,862.80
  6. Step 6: Final answer
    x = 1,034,806.20

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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.