Home / 426,074.10-639,111.15-268,998.90

Finding the Fourth Proportional to 426,074.10, 639,111.15 and 268,998.90

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Solution

The fourth proportional to 426,074.10, 639,111.15 and 268,998.90 is: 403,498.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,074.10 : 639,111.15 = 268,998.90 : x
  2. Step 2: Convert to fraction form
    426,074.10/639,111.15 = 268,998.90/x
  3. Step 3: Cross multiply
    426,074.10x = 639,111.15 × 268,998.90
  4. Step 4: Simplify right side
    426,074.10x = 171,920,196,327.74
  5. Step 5: Solve for x
    x = 171,920,196,327.74/426,074.10
  6. Step 6: Final answer
    x = 403,498.35

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Similar ratio
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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.