Home / 987,209.85-1,480,814.78-239,255.85

Finding the Fourth Proportional to 987,209.85, 1,480,814.78 and 239,255.85

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Solution

The fourth proportional to 987,209.85, 1,480,814.78 and 239,255.85 is: 358,883.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,209.85 : 1,480,814.78 = 239,255.85 : x
  2. Step 2: Convert to fraction form
    987,209.85/1,480,814.78 = 239,255.85/x
  3. Step 3: Cross multiply
    987,209.85x = 1,480,814.78 × 239,255.85
  4. Step 4: Simplify right side
    987,209.85x = 354,293,598,881.46
  5. Step 5: Solve for x
    x = 354,293,598,881.46/987,209.85
  6. Step 6: Final answer
    x = 358,883.78

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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.