Home / 2,990,947.80-4,486,421.70-2,790,181.20

Finding the Fourth Proportional to 2,990,947.80, 4,486,421.70 and 2,790,181.20

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Solution

The fourth proportional to 2,990,947.80, 4,486,421.70 and 2,790,181.20 is: 4,185,271.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990,947.80 : 4,486,421.70 = 2,790,181.20 : x
  2. Step 2: Convert to fraction form
    2,990,947.80/4,486,421.70 = 2,790,181.20/x
  3. Step 3: Cross multiply
    2,990,947.80x = 4,486,421.70 × 2,790,181.20
  4. Step 4: Simplify right side
    2,990,947.80x = 12,517,929,482,612.04
  5. Step 5: Solve for x
    x = 12,517,929,482,612.04/2,990,947.80
  6. Step 6: Final answer
    x = 4,185,271.80

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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.