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Finding the Fourth Proportional to 703,439.97, 970,743.87 and 381,150.11

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Solution

The fourth proportional to 703,439.97, 970,743.87 and 381,150.11 is: 525,985.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,439.97 : 970,743.87 = 381,150.11 : x
  2. Step 2: Convert to fraction form
    703,439.97/970,743.87 = 381,150.11/x
  3. Step 3: Cross multiply
    703,439.97x = 970,743.87 × 381,150.11
  4. Step 4: Simplify right side
    703,439.97x = 369,999,127,978.61
  5. Step 5: Solve for x
    x = 369,999,127,978.61/703,439.97
  6. Step 6: Final answer
    x = 525,985.36

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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.