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Finding the Fourth Proportional to 703,070.20, 970,216.14 and 397,160.92

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Solution

The fourth proportional to 703,070.20, 970,216.14 and 397,160.92 is: 548,070.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,070.20 : 970,216.14 = 397,160.92 : x
  2. Step 2: Convert to fraction form
    703,070.20/970,216.14 = 397,160.92/x
  3. Step 3: Cross multiply
    703,070.20x = 970,216.14 × 397,160.92
  4. Step 4: Simplify right side
    703,070.20x = 385,331,934,761.25
  5. Step 5: Solve for x
    x = 385,331,934,761.25/703,070.20
  6. Step 6: Final answer
    x = 548,070.36

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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.