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Finding the Fourth Proportional to 703,428.29, 970,727.65 and 381,138.33

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Solution

The fourth proportional to 703,428.29, 970,727.65 and 381,138.33 is: 525,969.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,428.29 : 970,727.65 = 381,138.33 : x
  2. Step 2: Convert to fraction form
    703,428.29/970,727.65 = 381,138.33/x
  3. Step 3: Cross multiply
    703,428.29x = 970,727.65 × 381,138.33
  4. Step 4: Simplify right side
    703,428.29x = 369,981,515,405.83
  5. Step 5: Solve for x
    x = 369,981,515,405.83/703,428.29
  6. Step 6: Final answer
    x = 525,969.06

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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.