Home / 990,960.66-1,485,916.11-391,897.62

Finding the Fourth Proportional to 990,960.66, 1,485,916.11 and 391,897.62

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Solution

The fourth proportional to 990,960.66, 1,485,916.11 and 391,897.62 is: 587,638.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,960.66 : 1,485,916.11 = 391,897.62 : x
  2. Step 2: Convert to fraction form
    990,960.66/1,485,916.11 = 391,897.62/x
  3. Step 3: Cross multiply
    990,960.66x = 1,485,916.11 × 391,897.62
  4. Step 4: Simplify right side
    990,960.66x = 582,326,987,028.66
  5. Step 5: Solve for x
    x = 582,326,987,028.66/990,960.66
  6. Step 6: Final answer
    x = 587,638.85

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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.