Home / 825,504.89-1,137,654.18-643,929.21

Finding the Fourth Proportional to 825,504.89, 1,137,654.18 and 643,929.21

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Solution

The fourth proportional to 825,504.89, 1,137,654.18 and 643,929.21 is: 887,419.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,504.89 : 1,137,654.18 = 643,929.21 : x
  2. Step 2: Convert to fraction form
    825,504.89/1,137,654.18 = 643,929.21/x
  3. Step 3: Cross multiply
    825,504.89x = 1,137,654.18 × 643,929.21
  4. Step 4: Simplify right side
    825,504.89x = 732,568,757,380.60
  5. Step 5: Solve for x
    x = 732,568,757,380.60/825,504.89
  6. Step 6: Final answer
    x = 887,419.05

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