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Finding the Fourth Proportional to 978,859.24, 1,350,805.39 and 543,251.30

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Solution

The fourth proportional to 978,859.24, 1,350,805.39 and 543,251.30 is: 749,675.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,859.24 : 1,350,805.39 = 543,251.30 : x
  2. Step 2: Convert to fraction form
    978,859.24/1,350,805.39 = 543,251.30/x
  3. Step 3: Cross multiply
    978,859.24x = 1,350,805.39 × 543,251.30
  4. Step 4: Simplify right side
    978,859.24x = 733,826,776,052.35
  5. Step 5: Solve for x
    x = 733,826,776,052.35/978,859.24
  6. Step 6: Final answer
    x = 749,675.49

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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.