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Finding the Fourth Proportional to 887,879.30, 1,330,288.05 and 413,591.90

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Solution

The fourth proportional to 887,879.30, 1,330,288.05 and 413,591.90 is: 619,674.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,879.30 : 1,330,288.05 = 413,591.90 : x
  2. Step 2: Convert to fraction form
    887,879.30/1,330,288.05 = 413,591.90/x
  3. Step 3: Cross multiply
    887,879.30x = 1,330,288.05 × 413,591.90
  4. Step 4: Simplify right side
    887,879.30x = 550,196,362,146.80
  5. Step 5: Solve for x
    x = 550,196,362,146.80/887,879.30
  6. Step 6: Final answer
    x = 619,674.73

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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.