Home / 638,862.39-958,282.19-189,886.78

Finding the Fourth Proportional to 638,862.39, 958,282.19 and 189,886.78

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Solution

The fourth proportional to 638,862.39, 958,282.19 and 189,886.78 is: 284,826.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,862.39 : 958,282.19 = 189,886.78 : x
  2. Step 2: Convert to fraction form
    638,862.39/958,282.19 = 189,886.78/x
  3. Step 3: Cross multiply
    638,862.39x = 958,282.19 × 189,886.78
  4. Step 4: Simplify right side
    638,862.39x = 181,965,113,649.60
  5. Step 5: Solve for x
    x = 181,965,113,649.60/638,862.39
  6. Step 6: Final answer
    x = 284,826.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.