Home / 1,178,145.90-1,767,218.85-1,091,540.70

Finding the Fourth Proportional to 1,178,145.90, 1,767,218.85 and 1,091,540.70

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Solution

The fourth proportional to 1,178,145.90, 1,767,218.85 and 1,091,540.70 is: 1,637,311.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,145.90 : 1,767,218.85 = 1,091,540.70 : x
  2. Step 2: Convert to fraction form
    1,178,145.90/1,767,218.85 = 1,091,540.70/x
  3. Step 3: Cross multiply
    1,178,145.90x = 1,767,218.85 × 1,091,540.70
  4. Step 4: Simplify right side
    1,178,145.90x = 1,928,991,300,582.20
  5. Step 5: Solve for x
    x = 1,928,991,300,582.20/1,178,145.90
  6. Step 6: Final answer
    x = 1,637,311.05

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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.