Home / 808,785.60-1,115,326.83-627,431.46

Finding the Fourth Proportional to 808,785.60, 1,115,326.83 and 627,431.46

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Solution

The fourth proportional to 808,785.60, 1,115,326.83 and 627,431.46 is: 865,236.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,785.60 : 1,115,326.83 = 627,431.46 : x
  2. Step 2: Convert to fraction form
    808,785.60/1,115,326.83 = 627,431.46/x
  3. Step 3: Cross multiply
    808,785.60x = 1,115,326.83 × 627,431.46
  4. Step 4: Simplify right side
    808,785.60x = 699,791,141,324.07
  5. Step 5: Solve for x
    x = 699,791,141,324.07/808,785.60
  6. Step 6: Final answer
    x = 865,236.90

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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.