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Finding the Fourth Proportional to 703,387.68, 970,667.28 and 381,078.54

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Solution

The fourth proportional to 703,387.68, 970,667.28 and 381,078.54 is: 525,884.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,387.68 : 970,667.28 = 381,078.54 : x
  2. Step 2: Convert to fraction form
    703,387.68/970,667.28 = 381,078.54/x
  3. Step 3: Cross multiply
    703,387.68x = 970,667.28 × 381,078.54
  4. Step 4: Simplify right side
    703,387.68x = 369,900,469,888.17
  5. Step 5: Solve for x
    x = 369,900,469,888.17/703,387.68
  6. Step 6: Final answer
    x = 525,884.20

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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.