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Finding the Fourth Proportional to 978,596.80, 1,350,545.12 and 543,055.20

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Solution

The fourth proportional to 978,596.80, 1,350,545.12 and 543,055.20 is: 749,461.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,596.80 : 1,350,545.12 = 543,055.20 : x
  2. Step 2: Convert to fraction form
    978,596.80/1,350,545.12 = 543,055.20/x
  3. Step 3: Cross multiply
    978,596.80x = 1,350,545.12 × 543,055.20
  4. Step 4: Simplify right side
    978,596.80x = 733,420,550,250.62
  5. Step 5: Solve for x
    x = 733,420,550,250.62/978,596.80
  6. Step 6: Final answer
    x = 749,461.42

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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.