Home / 639,411.09-882,331.41-409,562.88

Finding the Fourth Proportional to 639,411.09, 882,331.41 and 409,562.88

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Solution

The fourth proportional to 639,411.09, 882,331.41 and 409,562.88 is: 565,160.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,411.09 : 882,331.41 = 409,562.88 : x
  2. Step 2: Convert to fraction form
    639,411.09/882,331.41 = 409,562.88/x
  3. Step 3: Cross multiply
    639,411.09x = 882,331.41 × 409,562.88
  4. Step 4: Simplify right side
    639,411.09x = 361,370,193,394.06
  5. Step 5: Solve for x
    x = 361,370,193,394.06/639,411.09
  6. Step 6: Final answer
    x = 565,160.97

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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.