Home / 817,766.41-1,128,517.50-455,182.51

Finding the Fourth Proportional to 817,766.41, 1,128,517.50 and 455,182.51

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Solution

The fourth proportional to 817,766.41, 1,128,517.50 and 455,182.51 is: 628,151.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,766.41 : 1,128,517.50 = 455,182.51 : x
  2. Step 2: Convert to fraction form
    817,766.41/1,128,517.50 = 455,182.51/x
  3. Step 3: Cross multiply
    817,766.41x = 1,128,517.50 × 455,182.51
  4. Step 4: Simplify right side
    817,766.41x = 513,681,428,228.93
  5. Step 5: Solve for x
    x = 513,681,428,228.93/817,766.41
  6. Step 6: Final answer
    x = 628,151.78

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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.