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Finding the Fourth Proportional to 646,753.44, 969,394.51 and 393,475.62

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Solution

The fourth proportional to 646,753.44, 969,394.51 and 393,475.62 is: 589,765.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,753.44 : 969,394.51 = 393,475.62 : x
  2. Step 2: Convert to fraction form
    646,753.44/969,394.51 = 393,475.62/x
  3. Step 3: Cross multiply
    646,753.44x = 969,394.51 × 393,475.62
  4. Step 4: Simplify right side
    646,753.44x = 381,433,108,867.27
  5. Step 5: Solve for x
    x = 381,433,108,867.27/646,753.44
  6. Step 6: Final answer
    x = 589,765.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.