Home / 2,005,205.40-3,007,808.10-1,987,490.70

Finding the Fourth Proportional to 2,005,205.40, 3,007,808.10 and 1,987,490.70

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Solution

The fourth proportional to 2,005,205.40, 3,007,808.10 and 1,987,490.70 is: 2,981,236.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,005,205.40 : 3,007,808.10 = 1,987,490.70 : x
  2. Step 2: Convert to fraction form
    2,005,205.40/3,007,808.10 = 1,987,490.70/x
  3. Step 3: Cross multiply
    2,005,205.40x = 3,007,808.10 × 1,987,490.70
  4. Step 4: Simplify right side
    2,005,205.40x = 5,977,990,626,134.67
  5. Step 5: Solve for x
    x = 5,977,990,626,134.67/2,005,205.40
  6. Step 6: Final answer
    x = 2,981,236.05

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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.