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Finding the Fourth Proportional to 659,949.69, 989,891.70 and 361,014.15

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Solution

The fourth proportional to 659,949.69, 989,891.70 and 361,014.15 is: 541,503.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,949.69 : 989,891.70 = 361,014.15 : x
  2. Step 2: Convert to fraction form
    659,949.69/989,891.70 = 361,014.15/x
  3. Step 3: Cross multiply
    659,949.69x = 989,891.70 × 361,014.15
  4. Step 4: Simplify right side
    659,949.69x = 357,364,910,667.56
  5. Step 5: Solve for x
    x = 357,364,910,667.56/659,949.69
  6. Step 6: Final answer
    x = 541,503.26

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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.