Home / 987,862.60-1,481,680.70-258,456.23

Finding the Fourth Proportional to 987,862.60, 1,481,680.70 and 258,456.23

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Solution

The fourth proportional to 987,862.60, 1,481,680.70 and 258,456.23 is: 387,654.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,862.60 : 1,481,680.70 = 258,456.23 : x
  2. Step 2: Convert to fraction form
    987,862.60/1,481,680.70 = 258,456.23/x
  3. Step 3: Cross multiply
    987,862.60x = 1,481,680.70 × 258,456.23
  4. Step 4: Simplify right side
    987,862.60x = 382,949,607,785.76
  5. Step 5: Solve for x
    x = 382,949,607,785.76/987,862.60
  6. Step 6: Final answer
    x = 387,654.73

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Double scale
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1.5x scale

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.