Home / 781,811.20-1,175,222.40-726,342.40

Finding the Fourth Proportional to 781,811.20, 1,175,222.40 and 726,342.40

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Solution

The fourth proportional to 781,811.20, 1,175,222.40 and 726,342.40 is: 1,091,841.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,811.20 : 1,175,222.40 = 726,342.40 : x
  2. Step 2: Convert to fraction form
    781,811.20/1,175,222.40 = 726,342.40/x
  3. Step 3: Cross multiply
    781,811.20x = 1,175,222.40 × 726,342.40
  4. Step 4: Simplify right side
    781,811.20x = 853,613,858,549.76
  5. Step 5: Solve for x
    x = 853,613,858,549.76/781,811.20
  6. Step 6: Final answer
    x = 1,091,841.43

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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.