Home / 781,749.20-1,175,129.40-726,280.40

Finding the Fourth Proportional to 781,749.20, 1,175,129.40 and 726,280.40

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Solution

The fourth proportional to 781,749.20, 1,175,129.40 and 726,280.40 is: 1,091,748.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,749.20 : 1,175,129.40 = 726,280.40 : x
  2. Step 2: Convert to fraction form
    781,749.20/1,175,129.40 = 726,280.40/x
  3. Step 3: Cross multiply
    781,749.20x = 1,175,129.40 × 726,280.40
  4. Step 4: Simplify right side
    781,749.20x = 853,473,450,683.76
  5. Step 5: Solve for x
    x = 853,473,450,683.76/781,749.20
  6. Step 6: Final answer
    x = 1,091,748.42

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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.