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Finding the Fourth Proportional to 806,902.77, 1,209,793.64 and 357,378.69

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Solution

The fourth proportional to 806,902.77, 1,209,793.64 and 357,378.69 is: 535,819.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,902.77 : 1,209,793.64 = 357,378.69 : x
  2. Step 2: Convert to fraction form
    806,902.77/1,209,793.64 = 357,378.69/x
  3. Step 3: Cross multiply
    806,902.77x = 1,209,793.64 × 357,378.69
  4. Step 4: Simplify right side
    806,902.77x = 432,354,464,446.64
  5. Step 5: Solve for x
    x = 432,354,464,446.64/806,902.77
  6. Step 6: Final answer
    x = 535,819.78

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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.