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Finding the Fourth Proportional to 658,839.60, 987,967.80 and 303,670.80

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Solution

The fourth proportional to 658,839.60, 987,967.80 and 303,670.80 is: 455,371.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,839.60 : 987,967.80 = 303,670.80 : x
  2. Step 2: Convert to fraction form
    658,839.60/987,967.80 = 303,670.80/x
  3. Step 3: Cross multiply
    658,839.60x = 987,967.80 × 303,670.80
  4. Step 4: Simplify right side
    658,839.60x = 300,016,972,200.24
  5. Step 5: Solve for x
    x = 300,016,972,200.24/658,839.60
  6. Step 6: Final answer
    x = 455,371.80

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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.