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Finding the Fourth Proportional to 809,793.80, 1,215,785.10 and 473,179.40

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Solution

The fourth proportional to 809,793.80, 1,215,785.10 and 473,179.40 is: 710,408.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,793.80 : 1,215,785.10 = 473,179.40 : x
  2. Step 2: Convert to fraction form
    809,793.80/1,215,785.10 = 473,179.40/x
  3. Step 3: Cross multiply
    809,793.80x = 1,215,785.10 × 473,179.40
  4. Step 4: Simplify right side
    809,793.80x = 575,284,464,146.94
  5. Step 5: Solve for x
    x = 575,284,464,146.94/809,793.80
  6. Step 6: Final answer
    x = 710,408.58

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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.