Home / 639,067.41-885,641.20-630,047.25

Finding the Fourth Proportional to 639,067.41, 885,641.20 and 630,047.25

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Solution

The fourth proportional to 639,067.41, 885,641.20 and 630,047.25 is: 873,140.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,067.41 : 885,641.20 = 630,047.25 : x
  2. Step 2: Convert to fraction form
    639,067.41/885,641.20 = 630,047.25/x
  3. Step 3: Cross multiply
    639,067.41x = 885,641.20 × 630,047.25
  4. Step 4: Simplify right side
    639,067.41x = 557,995,800,971.58
  5. Step 5: Solve for x
    x = 557,995,800,971.58/639,067.41
  6. Step 6: Final answer
    x = 873,140.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.