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Finding the Fourth Proportional to 978,330.24, 1,349,523.68 and 615,179.20

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Solution

The fourth proportional to 978,330.24, 1,349,523.68 and 615,179.20 is: 848,587.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,330.24 : 1,349,523.68 = 615,179.20 : x
  2. Step 2: Convert to fraction form
    978,330.24/1,349,523.68 = 615,179.20/x
  3. Step 3: Cross multiply
    978,330.24x = 1,349,523.68 × 615,179.20
  4. Step 4: Simplify right side
    978,330.24x = 830,198,897,843.46
  5. Step 5: Solve for x
    x = 830,198,897,843.46/978,330.24
  6. Step 6: Final answer
    x = 848,587.59

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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.