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Finding the Fourth Proportional to 703,151.44, 970,279.64 and 392,996.78

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Solution

The fourth proportional to 703,151.44, 970,279.64 and 392,996.78 is: 542,296.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,151.44 : 970,279.64 = 392,996.78 : x
  2. Step 2: Convert to fraction form
    703,151.44/970,279.64 = 392,996.78/x
  3. Step 3: Cross multiply
    703,151.44x = 970,279.64 × 392,996.78
  4. Step 4: Simplify right side
    703,151.44x = 381,316,774,219.56
  5. Step 5: Solve for x
    x = 381,316,774,219.56/703,151.44
  6. Step 6: Final answer
    x = 542,296.80

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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.