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Finding the Fourth Proportional to 1,353,697.65, 1,867,608.50 and 809,849.07

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Solution

The fourth proportional to 1,353,697.65, 1,867,608.50 and 809,849.07 is: 1,117,296.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353,697.65 : 1,867,608.50 = 809,849.07 : x
  2. Step 2: Convert to fraction form
    1,353,697.65/1,867,608.50 = 809,849.07/x
  3. Step 3: Cross multiply
    1,353,697.65x = 1,867,608.50 × 809,849.07
  4. Step 4: Simplify right side
    1,353,697.65x = 1,512,481,002,799.85
  5. Step 5: Solve for x
    x = 1,512,481,002,799.85/1,353,697.65
  6. Step 6: Final answer
    x = 1,117,296.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.