Home / 426,113.70-639,170.55-268,520.10

Finding the Fourth Proportional to 426,113.70, 639,170.55 and 268,520.10

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Solution

The fourth proportional to 426,113.70, 639,170.55 and 268,520.10 is: 402,780.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,113.70 : 639,170.55 = 268,520.10 : x
  2. Step 2: Convert to fraction form
    426,113.70/639,170.55 = 268,520.10/x
  3. Step 3: Cross multiply
    426,113.70x = 639,170.55 × 268,520.10
  4. Step 4: Simplify right side
    426,113.70x = 171,630,140,003.06
  5. Step 5: Solve for x
    x = 171,630,140,003.06/426,113.70
  6. Step 6: Final answer
    x = 402,780.15

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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.