Home / 781,749.70-1,175,130.15-726,280.90

Finding the Fourth Proportional to 781,749.70, 1,175,130.15 and 726,280.90

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Solution

The fourth proportional to 781,749.70, 1,175,130.15 and 726,280.90 is: 1,091,749.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,749.70 : 1,175,130.15 = 726,280.90 : x
  2. Step 2: Convert to fraction form
    781,749.70/1,175,130.15 = 726,280.90/x
  3. Step 3: Cross multiply
    781,749.70x = 1,175,130.15 × 726,280.90
  4. Step 4: Simplify right side
    781,749.70x = 853,474,582,959.14
  5. Step 5: Solve for x
    x = 853,474,582,959.14/781,749.70
  6. Step 6: Final answer
    x = 1,091,749.17

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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.