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Finding the Fourth Proportional to 659,847.15, 989,573.28 and 344,131.83

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Solution

The fourth proportional to 659,847.15, 989,573.28 and 344,131.83 is: 516,094.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,847.15 : 989,573.28 = 344,131.83 : x
  2. Step 2: Convert to fraction form
    659,847.15/989,573.28 = 344,131.83/x
  3. Step 3: Cross multiply
    659,847.15x = 989,573.28 × 344,131.83
  4. Step 4: Simplify right side
    659,847.15x = 340,543,663,765.50
  5. Step 5: Solve for x
    x = 340,543,663,765.50/659,847.15
  6. Step 6: Final answer
    x = 516,094.77

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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.