Home / 1,387,478.82-2,079,840.42-667,671.51

Finding the Fourth Proportional to 1,387,478.82, 2,079,840.42 and 667,671.51

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Solution

The fourth proportional to 1,387,478.82, 2,079,840.42 and 667,671.51 is: 1,000,844.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,478.82 : 2,079,840.42 = 667,671.51 : x
  2. Step 2: Convert to fraction form
    1,387,478.82/2,079,840.42 = 667,671.51/x
  3. Step 3: Cross multiply
    1,387,478.82x = 2,079,840.42 × 667,671.51
  4. Step 4: Simplify right side
    1,387,478.82x = 1,388,650,193,780.43
  5. Step 5: Solve for x
    x = 1,388,650,193,780.43/1,387,478.82
  6. Step 6: Final answer
    x = 1,000,844.25

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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.