Home / 858,798.20-1,288,197.30-839,115.20

Finding the Fourth Proportional to 858,798.20, 1,288,197.30 and 839,115.20

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Solution

The fourth proportional to 858,798.20, 1,288,197.30 and 839,115.20 is: 1,258,672.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,798.20 : 1,288,197.30 = 839,115.20 : x
  2. Step 2: Convert to fraction form
    858,798.20/1,288,197.30 = 839,115.20/x
  3. Step 3: Cross multiply
    858,798.20x = 1,288,197.30 × 839,115.20
  4. Step 4: Simplify right side
    858,798.20x = 1,080,945,935,028.96
  5. Step 5: Solve for x
    x = 1,080,945,935,028.96/858,798.20
  6. Step 6: Final answer
    x = 1,258,672.80

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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.