Home / 1,178,145.40-1,767,218.10-1,091,540.20

Finding the Fourth Proportional to 1,178,145.40, 1,767,218.10 and 1,091,540.20

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Solution

The fourth proportional to 1,178,145.40, 1,767,218.10 and 1,091,540.20 is: 1,637,310.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,145.40 : 1,767,218.10 = 1,091,540.20 : x
  2. Step 2: Convert to fraction form
    1,178,145.40/1,767,218.10 = 1,091,540.20/x
  3. Step 3: Cross multiply
    1,178,145.40x = 1,767,218.10 × 1,091,540.20
  4. Step 4: Simplify right side
    1,178,145.40x = 1,928,989,598,317.62
  5. Step 5: Solve for x
    x = 1,928,989,598,317.62/1,178,145.40
  6. Step 6: Final answer
    x = 1,637,310.30

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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.