Home / 644,052.20-966,078.30-325,187.60

Finding the Fourth Proportional to 644,052.20, 966,078.30 and 325,187.60

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Solution

The fourth proportional to 644,052.20, 966,078.30 and 325,187.60 is: 487,781.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,052.20 : 966,078.30 = 325,187.60 : x
  2. Step 2: Convert to fraction form
    644,052.20/966,078.30 = 325,187.60/x
  3. Step 3: Cross multiply
    644,052.20x = 966,078.30 × 325,187.60
  4. Step 4: Simplify right side
    644,052.20x = 314,156,683,789.08
  5. Step 5: Solve for x
    x = 314,156,683,789.08/644,052.20
  6. Step 6: Final answer
    x = 487,781.40

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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.