Home / 426,110.20-639,014.10-189,028.60

Finding the Fourth Proportional to 426,110.20, 639,014.10 and 189,028.60

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Solution

The fourth proportional to 426,110.20, 639,014.10 and 189,028.60 is: 283,475.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,110.20 : 639,014.10 = 189,028.60 : x
  2. Step 2: Convert to fraction form
    426,110.20/639,014.10 = 189,028.60/x
  3. Step 3: Cross multiply
    426,110.20x = 639,014.10 × 189,028.60
  4. Step 4: Simplify right side
    426,110.20x = 120,791,940,703.26
  5. Step 5: Solve for x
    x = 120,791,940,703.26/426,110.20
  6. Step 6: Final answer
    x = 283,475.83

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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.