Home / 812,035.11-1,120,579.86-449,459.67

Finding the Fourth Proportional to 812,035.11, 1,120,579.86 and 449,459.67

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Solution

The fourth proportional to 812,035.11, 1,120,579.86 and 449,459.67 is: 620,238.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,035.11 : 1,120,579.86 = 449,459.67 : x
  2. Step 2: Convert to fraction form
    812,035.11/1,120,579.86 = 449,459.67/x
  3. Step 3: Cross multiply
    812,035.11x = 1,120,579.86 × 449,459.67
  4. Step 4: Simplify right side
    812,035.11x = 503,655,454,084.25
  5. Step 5: Solve for x
    x = 503,655,454,084.25/812,035.11
  6. Step 6: Final answer
    x = 620,238.52

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Why These Related Problems?

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