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Finding the Fourth Proportional to 888,012.80, 1,330,488.30 and 413,725.40

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Solution

The fourth proportional to 888,012.80, 1,330,488.30 and 413,725.40 is: 619,874.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,012.80 : 1,330,488.30 = 413,725.40 : x
  2. Step 2: Convert to fraction form
    888,012.80/1,330,488.30 = 413,725.40/x
  3. Step 3: Cross multiply
    888,012.80x = 1,330,488.30 × 413,725.40
  4. Step 4: Simplify right side
    888,012.80x = 550,456,804,112.82
  5. Step 5: Solve for x
    x = 550,456,804,112.82/888,012.80
  6. Step 6: Final answer
    x = 619,874.85

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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.