Home / 420,086.46-629,940.15-120,498.30

Finding the Fourth Proportional to 420,086.46, 629,940.15 and 120,498.30

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Solution

The fourth proportional to 420,086.46, 629,940.15 and 120,498.30 is: 180,693.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,086.46 : 629,940.15 = 120,498.30 : x
  2. Step 2: Convert to fraction form
    420,086.46/629,940.15 = 120,498.30/x
  3. Step 3: Cross multiply
    420,086.46x = 629,940.15 × 120,498.30
  4. Step 4: Simplify right side
    420,086.46x = 75,906,717,176.75
  5. Step 5: Solve for x
    x = 75,906,717,176.75/420,086.46
  6. Step 6: Final answer
    x = 180,693.08

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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.