Home / 1,256,170.38-1,732,959.15-772,449.72

Finding the Fourth Proportional to 1,256,170.38, 1,732,959.15 and 772,449.72

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Solution

The fourth proportional to 1,256,170.38, 1,732,959.15 and 772,449.72 is: 1,065,638.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256,170.38 : 1,732,959.15 = 772,449.72 : x
  2. Step 2: Convert to fraction form
    1,256,170.38/1,732,959.15 = 772,449.72/x
  3. Step 3: Cross multiply
    1,256,170.38x = 1,732,959.15 × 772,449.72
  4. Step 4: Simplify right side
    1,256,170.38x = 1,338,623,810,188.94
  5. Step 5: Solve for x
    x = 1,338,623,810,188.94/1,256,170.38
  6. Step 6: Final answer
    x = 1,065,638.73

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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.