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Finding the Fourth Proportional to 659,328.66, 989,170.53 and 339,306.15

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Solution

The fourth proportional to 659,328.66, 989,170.53 and 339,306.15 is: 509,050.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,328.66 : 989,170.53 = 339,306.15 : x
  2. Step 2: Convert to fraction form
    659,328.66/989,170.53 = 339,306.15/x
  3. Step 3: Cross multiply
    659,328.66x = 989,170.53 × 339,306.15
  4. Step 4: Simplify right side
    659,328.66x = 335,631,644,227.76
  5. Step 5: Solve for x
    x = 335,631,644,227.76/659,328.66
  6. Step 6: Final answer
    x = 509,050.59

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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.