Home / 819,696.39-1,131,178.81-457,120.66

Finding the Fourth Proportional to 819,696.39, 1,131,178.81 and 457,120.66

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Solution

The fourth proportional to 819,696.39, 1,131,178.81 and 457,120.66 is: 630,825.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,696.39 : 1,131,178.81 = 457,120.66 : x
  2. Step 2: Convert to fraction form
    819,696.39/1,131,178.81 = 457,120.66/x
  3. Step 3: Cross multiply
    819,696.39x = 1,131,178.81 × 457,120.66
  4. Step 4: Simplify right side
    819,696.39x = 517,085,204,205.22
  5. Step 5: Solve for x
    x = 517,085,204,205.22/819,696.39
  6. Step 6: Final answer
    x = 630,825.28

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Double scale
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1.5x scale

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.