Home / 990,872.73-1,486,134.14-391,634.73

Finding the Fourth Proportional to 990,872.73, 1,486,134.14 and 391,634.73

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Solution

The fourth proportional to 990,872.73, 1,486,134.14 and 391,634.73 is: 587,382.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,872.73 : 1,486,134.14 = 391,634.73 : x
  2. Step 2: Convert to fraction form
    990,872.73/1,486,134.14 = 391,634.73/x
  3. Step 3: Cross multiply
    990,872.73x = 1,486,134.14 × 391,634.73
  4. Step 4: Simplify right side
    990,872.73x = 582,021,740,704.51
  5. Step 5: Solve for x
    x = 582,021,740,704.51/990,872.73
  6. Step 6: Final answer
    x = 587,382.94

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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.