Home / 429,566.10-644,349.15-419,724.60

Finding the Fourth Proportional to 429,566.10, 644,349.15 and 419,724.60

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Solution

The fourth proportional to 429,566.10, 644,349.15 and 419,724.60 is: 629,586.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,566.10 : 644,349.15 = 419,724.60 : x
  2. Step 2: Convert to fraction form
    429,566.10/644,349.15 = 419,724.60/x
  3. Step 3: Cross multiply
    429,566.10x = 644,349.15 × 419,724.60
  4. Step 4: Simplify right side
    429,566.10x = 270,449,189,244.09
  5. Step 5: Solve for x
    x = 270,449,189,244.09/429,566.10
  6. Step 6: Final answer
    x = 629,586.90

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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.