Home / 724,862.20-1,087,293.30-647,447.80

Finding the Fourth Proportional to 724,862.20, 1,087,293.30 and 647,447.80

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Solution

The fourth proportional to 724,862.20, 1,087,293.30 and 647,447.80 is: 971,171.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,862.20 : 1,087,293.30 = 647,447.80 : x
  2. Step 2: Convert to fraction form
    724,862.20/1,087,293.30 = 647,447.80/x
  3. Step 3: Cross multiply
    724,862.20x = 1,087,293.30 × 647,447.80
  4. Step 4: Simplify right side
    724,862.20x = 703,965,655,039.74
  5. Step 5: Solve for x
    x = 703,965,655,039.74/724,862.20
  6. Step 6: Final answer
    x = 971,171.70

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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.