Home / 987,280.13-1,480,920.20-239,326.13

Finding the Fourth Proportional to 987,280.13, 1,480,920.20 and 239,326.13

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Solution

The fourth proportional to 987,280.13, 1,480,920.20 and 239,326.13 is: 358,989.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,280.13 : 1,480,920.20 = 239,326.13 : x
  2. Step 2: Convert to fraction form
    987,280.13/1,480,920.20 = 239,326.13/x
  3. Step 3: Cross multiply
    987,280.13x = 1,480,920.20 × 239,326.13
  4. Step 4: Simplify right side
    987,280.13x = 354,422,891,703.59
  5. Step 5: Solve for x
    x = 354,422,891,703.59/987,280.13
  6. Step 6: Final answer
    x = 358,989.19

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Double scale
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Similar ratio
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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.