Home / 817,019.78-1,127,471.09-454,435.83

Finding the Fourth Proportional to 817,019.78, 1,127,471.09 and 454,435.83

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Solution

The fourth proportional to 817,019.78, 1,127,471.09 and 454,435.83 is: 627,112.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,019.78 : 1,127,471.09 = 454,435.83 : x
  2. Step 2: Convert to fraction form
    817,019.78/1,127,471.09 = 454,435.83/x
  3. Step 3: Cross multiply
    817,019.78x = 1,127,471.09 × 454,435.83
  4. Step 4: Simplify right side
    817,019.78x = 512,363,258,312.98
  5. Step 5: Solve for x
    x = 512,363,258,312.98/817,019.78
  6. Step 6: Final answer
    x = 627,112.43

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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.