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Finding the Fourth Proportional to 768,364.80, 1,149,922.80 and 673,886.40

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Solution

The fourth proportional to 768,364.80, 1,149,922.80 and 673,886.40 is: 1,008,527.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,364.80 : 1,149,922.80 = 673,886.40 : x
  2. Step 2: Convert to fraction form
    768,364.80/1,149,922.80 = 673,886.40/x
  3. Step 3: Cross multiply
    768,364.80x = 1,149,922.80 × 673,886.40
  4. Step 4: Simplify right side
    768,364.80x = 774,917,335,969.92
  5. Step 5: Solve for x
    x = 774,917,335,969.92/768,364.80
  6. Step 6: Final answer
    x = 1,008,527.90

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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.