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Finding the Fourth Proportional to 978,630.15, 1,467,593.04 and 338,760.03

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Solution

The fourth proportional to 978,630.15, 1,467,593.04 and 338,760.03 is: 508,018.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,630.15 : 1,467,593.04 = 338,760.03 : x
  2. Step 2: Convert to fraction form
    978,630.15/1,467,593.04 = 338,760.03/x
  3. Step 3: Cross multiply
    978,630.15x = 1,467,593.04 × 338,760.03
  4. Step 4: Simplify right side
    978,630.15x = 497,161,862,258.19
  5. Step 5: Solve for x
    x = 497,161,862,258.19/978,630.15
  6. Step 6: Final answer
    x = 508,018.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.