Home / 648,057.60-972,086.40-368,121.60

Finding the Fourth Proportional to 648,057.60, 972,086.40 and 368,121.60

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Solution

The fourth proportional to 648,057.60, 972,086.40 and 368,121.60 is: 552,182.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,057.60 : 972,086.40 = 368,121.60 : x
  2. Step 2: Convert to fraction form
    648,057.60/972,086.40 = 368,121.60/x
  3. Step 3: Cross multiply
    648,057.60x = 972,086.40 × 368,121.60
  4. Step 4: Simplify right side
    648,057.60x = 357,846,000,906.24
  5. Step 5: Solve for x
    x = 357,846,000,906.24/648,057.60
  6. Step 6: Final answer
    x = 552,182.40

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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.