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Finding the Fourth Proportional to 768,249.20, 1,152,373.80 and 607,890.80

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Solution

The fourth proportional to 768,249.20, 1,152,373.80 and 607,890.80 is: 911,836.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,249.20 : 1,152,373.80 = 607,890.80 : x
  2. Step 2: Convert to fraction form
    768,249.20/1,152,373.80 = 607,890.80/x
  3. Step 3: Cross multiply
    768,249.20x = 1,152,373.80 × 607,890.80
  4. Step 4: Simplify right side
    768,249.20x = 700,517,431,181.04
  5. Step 5: Solve for x
    x = 700,517,431,181.04/768,249.20
  6. Step 6: Final answer
    x = 911,836.20

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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.