Home / 657,616.20-985,877.55-278,827.80

Finding the Fourth Proportional to 657,616.20, 985,877.55 and 278,827.80

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Solution

The fourth proportional to 657,616.20, 985,877.55 and 278,827.80 is: 418,009.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,616.20 : 985,877.55 = 278,827.80 : x
  2. Step 2: Convert to fraction form
    657,616.20/985,877.55 = 278,827.80/x
  3. Step 3: Cross multiply
    657,616.20x = 985,877.55 × 278,827.80
  4. Step 4: Simplify right side
    657,616.20x = 274,890,068,335.89
  5. Step 5: Solve for x
    x = 274,890,068,335.89/657,616.20
  6. Step 6: Final answer
    x = 418,009.88

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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.