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Finding the Fourth Proportional to 703,179.78, 970,330.56 and 397,282.72

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Solution

The fourth proportional to 703,179.78, 970,330.56 and 397,282.72 is: 548,217.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,179.78 : 970,330.56 = 397,282.72 : x
  2. Step 2: Convert to fraction form
    703,179.78/970,330.56 = 397,282.72/x
  3. Step 3: Cross multiply
    703,179.78x = 970,330.56 × 397,282.72
  4. Step 4: Simplify right side
    703,179.78x = 385,495,564,175.92
  5. Step 5: Solve for x
    x = 385,495,564,175.92/703,179.78
  6. Step 6: Final answer
    x = 548,217.65

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.