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Finding the Fourth Proportional to 478,801.80, 718,202.70 and 419,704.20

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Solution

The fourth proportional to 478,801.80, 718,202.70 and 419,704.20 is: 629,556.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,801.80 : 718,202.70 = 419,704.20 : x
  2. Step 2: Convert to fraction form
    478,801.80/718,202.70 = 419,704.20/x
  3. Step 3: Cross multiply
    478,801.80x = 718,202.70 × 419,704.20
  4. Step 4: Simplify right side
    478,801.80x = 301,432,689,641.34
  5. Step 5: Solve for x
    x = 301,432,689,641.34/478,801.80
  6. Step 6: Final answer
    x = 629,556.30

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Similar ratio
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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.