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Finding the Fourth Proportional to 703,397.81, 970,687.64 and 381,116.63

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Solution

The fourth proportional to 703,397.81, 970,687.64 and 381,116.63 is: 525,940.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,397.81 : 970,687.64 = 381,116.63 : x
  2. Step 2: Convert to fraction form
    703,397.81/970,687.64 = 381,116.63/x
  3. Step 3: Cross multiply
    703,397.81x = 970,687.64 × 381,116.63
  4. Step 4: Simplify right side
    703,397.81x = 369,945,195,380.43
  5. Step 5: Solve for x
    x = 369,945,195,380.43/703,397.81
  6. Step 6: Final answer
    x = 525,940.22

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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.