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Finding the Fourth Proportional to 978,448.61, 1,350,270.41 and 542,874.15

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Solution

The fourth proportional to 978,448.61, 1,350,270.41 and 542,874.15 is: 749,172.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,448.61 : 1,350,270.41 = 542,874.15 : x
  2. Step 2: Convert to fraction form
    978,448.61/1,350,270.41 = 542,874.15/x
  3. Step 3: Cross multiply
    978,448.61x = 1,350,270.41 × 542,874.15
  4. Step 4: Simplify right side
    978,448.61x = 733,026,898,384.53
  5. Step 5: Solve for x
    x = 733,026,898,384.53/978,448.61
  6. Step 6: Final answer
    x = 749,172.61

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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.