Home / 990,974.88-1,485,937.44-391,911.84

Finding the Fourth Proportional to 990,974.88, 1,485,937.44 and 391,911.84

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Solution

The fourth proportional to 990,974.88, 1,485,937.44 and 391,911.84 is: 587,660.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,974.88 : 1,485,937.44 = 391,911.84 : x
  2. Step 2: Convert to fraction form
    990,974.88/1,485,937.44 = 391,911.84/x
  3. Step 3: Cross multiply
    990,974.88x = 1,485,937.44 × 391,911.84
  4. Step 4: Simplify right side
    990,974.88x = 582,356,476,235.29
  5. Step 5: Solve for x
    x = 582,356,476,235.29/990,974.88
  6. Step 6: Final answer
    x = 587,660.18

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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.