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Finding the Fourth Proportional to 449,779.87, 620,679.34 and 245,829.13

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Solution

The fourth proportional to 449,779.87, 620,679.34 and 245,829.13 is: 339,234.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,779.87 : 620,679.34 = 245,829.13 : x
  2. Step 2: Convert to fraction form
    449,779.87/620,679.34 = 245,829.13/x
  3. Step 3: Cross multiply
    449,779.87x = 620,679.34 × 245,829.13
  4. Step 4: Simplify right side
    449,779.87x = 152,581,059,057.78
  5. Step 5: Solve for x
    x = 152,581,059,057.78/449,779.87
  6. Step 6: Final answer
    x = 339,234.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.