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Finding the Fourth Proportional to 982,889.60, 1,474,689.17 and 343,287.47

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Solution

The fourth proportional to 982,889.60, 1,474,689.17 and 343,287.47 is: 515,055.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    982,889.60 : 1,474,689.17 = 343,287.47 : x
  2. Step 2: Convert to fraction form
    982,889.60/1,474,689.17 = 343,287.47/x
  3. Step 3: Cross multiply
    982,889.60x = 1,474,689.17 × 343,287.47
  4. Step 4: Simplify right side
    982,889.60x = 506,242,318,750.64
  5. Step 5: Solve for x
    x = 506,242,318,750.64/982,889.60
  6. Step 6: Final answer
    x = 515,055.12

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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.