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Finding the Fourth Proportional to 978,348.20, 1,467,959.70 and 347,714.60

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Solution

The fourth proportional to 978,348.20, 1,467,959.70 and 347,714.60 is: 521,727.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,348.20 : 1,467,959.70 = 347,714.60 : x
  2. Step 2: Convert to fraction form
    978,348.20/1,467,959.70 = 347,714.60/x
  3. Step 3: Cross multiply
    978,348.20x = 1,467,959.70 × 347,714.60
  4. Step 4: Simplify right side
    978,348.20x = 510,431,019,901.62
  5. Step 5: Solve for x
    x = 510,431,019,901.62/978,348.20
  6. Step 6: Final answer
    x = 521,727.36

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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.