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Finding the Fourth Proportional to 1,144,372.72, 1,578,869.04 and 660,874

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Solution

The fourth proportional to 1,144,372.72, 1,578,869.04 and 660,874 is: 911,795.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,144,372.72 : 1,578,869.04 = 660,874 : x
  2. Step 2: Convert to fraction form
    1,144,372.72/1,578,869.04 = 660,874/x
  3. Step 3: Cross multiply
    1,144,372.72x = 1,578,869.04 × 660,874
  4. Step 4: Simplify right side
    1,144,372.72x = 1,043,433,497,940.96
  5. Step 5: Solve for x
    x = 1,043,433,497,940.96/1,144,372.72
  6. Step 6: Final answer
    x = 911,795.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.