Home / 987,212.60-1,480,818.90-239,258.60

Finding the Fourth Proportional to 987,212.60, 1,480,818.90 and 239,258.60

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Solution

The fourth proportional to 987,212.60, 1,480,818.90 and 239,258.60 is: 358,887.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,212.60 : 1,480,818.90 = 239,258.60 : x
  2. Step 2: Convert to fraction form
    987,212.60/1,480,818.90 = 239,258.60/x
  3. Step 3: Cross multiply
    987,212.60x = 1,480,818.90 × 239,258.60
  4. Step 4: Simplify right side
    987,212.60x = 354,298,649,463.45
  5. Step 5: Solve for x
    x = 354,298,649,463.45/987,212.60
  6. Step 6: Final answer
    x = 358,887.89

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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.