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Finding the Fourth Proportional to 453,380.20, 679,487.10 and 275,698.60

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Solution

The fourth proportional to 453,380.20, 679,487.10 and 275,698.60 is: 413,193.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,380.20 : 679,487.10 = 275,698.60 : x
  2. Step 2: Convert to fraction form
    453,380.20/679,487.10 = 275,698.60/x
  3. Step 3: Cross multiply
    453,380.20x = 679,487.10 × 275,698.60
  4. Step 4: Simplify right side
    453,380.20x = 187,333,642,188.06
  5. Step 5: Solve for x
    x = 187,333,642,188.06/453,380.20
  6. Step 6: Final answer
    x = 413,193.26

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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.