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Finding the Fourth Proportional to 978,694.46, 1,350,595.43 and 543,177.40

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Solution

The fourth proportional to 978,694.46, 1,350,595.43 and 543,177.40 is: 749,583.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,694.46 : 1,350,595.43 = 543,177.40 : x
  2. Step 2: Convert to fraction form
    978,694.46/1,350,595.43 = 543,177.40/x
  3. Step 3: Cross multiply
    978,694.46x = 1,350,595.43 × 543,177.40
  4. Step 4: Simplify right side
    978,694.46x = 733,612,915,128.56
  5. Step 5: Solve for x
    x = 733,612,915,128.56/978,694.46
  6. Step 6: Final answer
    x = 749,583.19

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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.