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Finding the Fourth Proportional to 808,820.70, 1,212,793.65 and 335,553.90

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Solution

The fourth proportional to 808,820.70, 1,212,793.65 and 335,553.90 is: 503,149.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,820.70 : 1,212,793.65 = 335,553.90 : x
  2. Step 2: Convert to fraction form
    808,820.70/1,212,793.65 = 335,553.90/x
  3. Step 3: Cross multiply
    808,820.70x = 1,212,793.65 × 335,553.90
  4. Step 4: Simplify right side
    808,820.70x = 406,957,639,152.74
  5. Step 5: Solve for x
    x = 406,957,639,152.74/808,820.70
  6. Step 6: Final answer
    x = 503,149.39

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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.