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Finding the Fourth Proportional to 659,847.90, 989,574.38 and 344,132.58

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Solution

The fourth proportional to 659,847.90, 989,574.38 and 344,132.58 is: 516,095.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,847.90 : 989,574.38 = 344,132.58 : x
  2. Step 2: Convert to fraction form
    659,847.90/989,574.38 = 344,132.58/x
  3. Step 3: Cross multiply
    659,847.90x = 989,574.38 × 344,132.58
  4. Step 4: Simplify right side
    659,847.90x = 340,544,782,770.64
  5. Step 5: Solve for x
    x = 340,544,782,770.64/659,847.90
  6. Step 6: Final answer
    x = 516,095.88

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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.