Home / 918,833.12-1,378,249.68-287,750.24

Finding the Fourth Proportional to 918,833.12, 1,378,249.68 and 287,750.24

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Solution

The fourth proportional to 918,833.12, 1,378,249.68 and 287,750.24 is: 431,625.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,833.12 : 1,378,249.68 = 287,750.24 : x
  2. Step 2: Convert to fraction form
    918,833.12/1,378,249.68 = 287,750.24/x
  3. Step 3: Cross multiply
    918,833.12x = 1,378,249.68 × 287,750.24
  4. Step 4: Simplify right side
    918,833.12x = 396,591,676,199.92
  5. Step 5: Solve for x
    x = 396,591,676,199.92/918,833.12
  6. Step 6: Final answer
    x = 431,625.36

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Double scale
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Similar ratio
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1.5x scale

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.