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Finding the Fourth Proportional to 703,419.57, 970,717.65 and 381,138.39

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Solution

The fourth proportional to 703,419.57, 970,717.65 and 381,138.39 is: 525,970.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,419.57 : 970,717.65 = 381,138.39 : x
  2. Step 2: Convert to fraction form
    703,419.57/970,717.65 = 381,138.39/x
  3. Step 3: Cross multiply
    703,419.57x = 970,717.65 × 381,138.39
  4. Step 4: Simplify right side
    703,419.57x = 369,977,762,265.58
  5. Step 5: Solve for x
    x = 369,977,762,265.58/703,419.57
  6. Step 6: Final answer
    x = 525,970.24

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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.