Home / 1,087,807.20-1,631,062.80-667,384.80

Finding the Fourth Proportional to 1,087,807.20, 1,631,062.80 and 667,384.80

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Solution

The fourth proportional to 1,087,807.20, 1,631,062.80 and 667,384.80 is: 1,000,679.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087,807.20 : 1,631,062.80 = 667,384.80 : x
  2. Step 2: Convert to fraction form
    1,087,807.20/1,631,062.80 = 667,384.80/x
  3. Step 3: Cross multiply
    1,087,807.20x = 1,631,062.80 × 667,384.80
  4. Step 4: Simplify right side
    1,087,807.20x = 1,088,546,520,565.44
  5. Step 5: Solve for x
    x = 1,088,546,520,565.44/1,087,807.20
  6. Step 6: Final answer
    x = 1,000,679.64

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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.