Home / 724,930.80-1,087,396.20-689,938.80

Finding the Fourth Proportional to 724,930.80, 1,087,396.20 and 689,938.80

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Solution

The fourth proportional to 724,930.80, 1,087,396.20 and 689,938.80 is: 1,034,908.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,930.80 : 1,087,396.20 = 689,938.80 : x
  2. Step 2: Convert to fraction form
    724,930.80/1,087,396.20 = 689,938.80/x
  3. Step 3: Cross multiply
    724,930.80x = 1,087,396.20 × 689,938.80
  4. Step 4: Simplify right side
    724,930.80x = 750,236,829,352.56
  5. Step 5: Solve for x
    x = 750,236,829,352.56/724,930.80
  6. Step 6: Final answer
    x = 1,034,908.20

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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.