Home / 1,290,767.64-1,781,049.72-717,793.08

Finding the Fourth Proportional to 1,290,767.64, 1,781,049.72 and 717,793.08

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Solution

The fourth proportional to 1,290,767.64, 1,781,049.72 and 717,793.08 is: 990,437.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,767.64 : 1,781,049.72 = 717,793.08 : x
  2. Step 2: Convert to fraction form
    1,290,767.64/1,781,049.72 = 717,793.08/x
  3. Step 3: Cross multiply
    1,290,767.64x = 1,781,049.72 × 717,793.08
  4. Step 4: Simplify right side
    1,290,767.64x = 1,278,425,164,151.94
  5. Step 5: Solve for x
    x = 1,278,425,164,151.94/1,290,767.64
  6. Step 6: Final answer
    x = 990,437.88

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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.