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Finding the Fourth Proportional to 978,479.52, 1,350,241.68 and 548,728.48

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Solution

The fourth proportional to 978,479.52, 1,350,241.68 and 548,728.48 is: 757,211.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,479.52 : 1,350,241.68 = 548,728.48 : x
  2. Step 2: Convert to fraction form
    978,479.52/1,350,241.68 = 548,728.48/x
  3. Step 3: Cross multiply
    978,479.52x = 1,350,241.68 × 548,728.48
  4. Step 4: Simplify right side
    978,479.52x = 740,916,064,699.05
  5. Step 5: Solve for x
    x = 740,916,064,699.05/978,479.52
  6. Step 6: Final answer
    x = 757,211.62

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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.