Home / 1,377,080.80-2,065,621.20-1,287,851.20

Finding the Fourth Proportional to 1,377,080.80, 2,065,621.20 and 1,287,851.20

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Solution

The fourth proportional to 1,377,080.80, 2,065,621.20 and 1,287,851.20 is: 1,931,776.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377,080.80 : 2,065,621.20 = 1,287,851.20 : x
  2. Step 2: Convert to fraction form
    1,377,080.80/2,065,621.20 = 1,287,851.20/x
  3. Step 3: Cross multiply
    1,377,080.80x = 2,065,621.20 × 1,287,851.20
  4. Step 4: Simplify right side
    1,377,080.80x = 2,660,212,741,165.44
  5. Step 5: Solve for x
    x = 2,660,212,741,165.44/1,377,080.80
  6. Step 6: Final answer
    x = 1,931,776.80

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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.