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Finding the Fourth Proportional to 668,958.17, 1,003,470.98 and 189,220.28

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Solution

The fourth proportional to 668,958.17, 1,003,470.98 and 189,220.28 is: 283,839.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,958.17 : 1,003,470.98 = 189,220.28 : x
  2. Step 2: Convert to fraction form
    668,958.17/1,003,470.98 = 189,220.28/x
  3. Step 3: Cross multiply
    668,958.17x = 1,003,470.98 × 189,220.28
  4. Step 4: Simplify right side
    668,958.17x = 189,877,053,844.02
  5. Step 5: Solve for x
    x = 189,877,053,844.02/668,958.17
  6. Step 6: Final answer
    x = 283,839.95

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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.