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Finding the Fourth Proportional to 887,059.80, 1,329,058.80 and 412,772.40

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Solution

The fourth proportional to 887,059.80, 1,329,058.80 and 412,772.40 is: 618,446.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,059.80 : 1,329,058.80 = 412,772.40 : x
  2. Step 2: Convert to fraction form
    887,059.80/1,329,058.80 = 412,772.40/x
  3. Step 3: Cross multiply
    887,059.80x = 1,329,058.80 × 412,772.40
  4. Step 4: Simplify right side
    887,059.80x = 548,598,790,617.12
  5. Step 5: Solve for x
    x = 548,598,790,617.12/887,059.80
  6. Step 6: Final answer
    x = 618,446.23

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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.