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Finding the Fourth Proportional to 741,663, 1,112,659.90 and 315,212.28

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Solution

The fourth proportional to 741,663, 1,112,659.90 and 315,212.28 is: 472,888.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    741,663 : 1,112,659.90 = 315,212.28 : x
  2. Step 2: Convert to fraction form
    741,663/1,112,659.90 = 315,212.28/x
  3. Step 3: Cross multiply
    741,663x = 1,112,659.90 × 315,212.28
  4. Step 4: Simplify right side
    741,663x = 350,724,063,943.57
  5. Step 5: Solve for x
    x = 350,724,063,943.57/741,663
  6. Step 6: Final answer
    x = 472,888.72

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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.