Home / 816,878.12-1,127,319.56-449,371.43

Finding the Fourth Proportional to 816,878.12, 1,127,319.56 and 449,371.43

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Solution

The fourth proportional to 816,878.12, 1,127,319.56 and 449,371.43 is: 620,147.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,878.12 : 1,127,319.56 = 449,371.43 : x
  2. Step 2: Convert to fraction form
    816,878.12/1,127,319.56 = 449,371.43/x
  3. Step 3: Cross multiply
    816,878.12x = 1,127,319.56 × 449,371.43
  4. Step 4: Simplify right side
    816,878.12x = 506,585,200,773.31
  5. Step 5: Solve for x
    x = 506,585,200,773.31/816,878.12
  6. Step 6: Final answer
    x = 620,147.84

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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.