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Finding the Fourth Proportional to 1,144,724.88, 1,579,793.80 and 661,310.16

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Solution

The fourth proportional to 1,144,724.88, 1,579,793.80 and 661,310.16 is: 912,650.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,144,724.88 : 1,579,793.80 = 661,310.16 : x
  2. Step 2: Convert to fraction form
    1,144,724.88/1,579,793.80 = 661,310.16/x
  3. Step 3: Cross multiply
    1,144,724.88x = 1,579,793.80 × 661,310.16
  4. Step 4: Simplify right side
    1,144,724.88x = 1,044,733,690,645.01
  5. Step 5: Solve for x
    x = 1,044,733,690,645.01/1,144,724.88
  6. Step 6: Final answer
    x = 912,650.46

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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.