Home / 812,355.41-1,121,085.50-449,779.27

Finding the Fourth Proportional to 812,355.41, 1,121,085.50 and 449,779.27

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Solution

The fourth proportional to 812,355.41, 1,121,085.50 and 449,779.27 is: 620,714.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,355.41 : 1,121,085.50 = 449,779.27 : x
  2. Step 2: Convert to fraction form
    812,355.41/1,121,085.50 = 449,779.27/x
  3. Step 3: Cross multiply
    812,355.41x = 1,121,085.50 × 449,779.27
  4. Step 4: Simplify right side
    812,355.41x = 504,241,017,797.59
  5. Step 5: Solve for x
    x = 504,241,017,797.59/812,355.41
  6. Step 6: Final answer
    x = 620,714.79

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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.