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Finding the Fourth Proportional to 1,280,948.52, 1,767,800.52 and 707,976.30

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Solution

The fourth proportional to 1,280,948.52, 1,767,800.52 and 707,976.30 is: 977,057.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,948.52 : 1,767,800.52 = 707,976.30 : x
  2. Step 2: Convert to fraction form
    1,280,948.52/1,767,800.52 = 707,976.30/x
  3. Step 3: Cross multiply
    1,280,948.52x = 1,767,800.52 × 707,976.30
  4. Step 4: Simplify right side
    1,280,948.52x = 1,251,560,871,287.68
  5. Step 5: Solve for x
    x = 1,251,560,871,287.68/1,280,948.52
  6. Step 6: Final answer
    x = 977,057.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.