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Finding the Fourth Proportional to 887,945.80, 1,330,387.80 and 413,658.40

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Solution

The fourth proportional to 887,945.80, 1,330,387.80 and 413,658.40 is: 619,774.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,945.80 : 1,330,387.80 = 413,658.40 : x
  2. Step 2: Convert to fraction form
    887,945.80/1,330,387.80 = 413,658.40/x
  3. Step 3: Cross multiply
    887,945.80x = 1,330,387.80 × 413,658.40
  4. Step 4: Simplify right side
    887,945.80x = 550,326,088,727.52
  5. Step 5: Solve for x
    x = 550,326,088,727.52/887,945.80
  6. Step 6: Final answer
    x = 619,774.41

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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.