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Finding the Fourth Proportional to 659,446.11, 989,311.32 and 343,818.27

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Solution

The fourth proportional to 659,446.11, 989,311.32 and 343,818.27 is: 515,801.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,446.11 : 989,311.32 = 343,818.27 : x
  2. Step 2: Convert to fraction form
    659,446.11/989,311.32 = 343,818.27/x
  3. Step 3: Cross multiply
    659,446.11x = 989,311.32 × 343,818.27
  4. Step 4: Simplify right side
    659,446.11x = 340,143,306,533.82
  5. Step 5: Solve for x
    x = 340,143,306,533.82/659,446.11
  6. Step 6: Final answer
    x = 515,801.52

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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.