Home / 811,971.11-1,120,522.55-449,420.15

Finding the Fourth Proportional to 811,971.11, 1,120,522.55 and 449,420.15

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Solution

The fourth proportional to 811,971.11, 1,120,522.55 and 449,420.15 is: 620,201.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,971.11 : 1,120,522.55 = 449,420.15 : x
  2. Step 2: Convert to fraction form
    811,971.11/1,120,522.55 = 449,420.15/x
  3. Step 3: Cross multiply
    811,971.11x = 1,120,522.55 × 449,420.15
  4. Step 4: Simplify right side
    811,971.11x = 503,585,404,649.67
  5. Step 5: Solve for x
    x = 503,585,404,649.67/811,971.11
  6. Step 6: Final answer
    x = 620,201.14

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.