Home / 811,951.83-1,120,459.07-449,341.76

Finding the Fourth Proportional to 811,951.83, 1,120,459.07 and 449,341.76

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Solution

The fourth proportional to 811,951.83, 1,120,459.07 and 449,341.76 is: 620,072.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,951.83 : 1,120,459.07 = 449,341.76 : x
  2. Step 2: Convert to fraction form
    811,951.83/1,120,459.07 = 449,341.76/x
  3. Step 3: Cross multiply
    811,951.83x = 1,120,459.07 × 449,341.76
  4. Step 4: Simplify right side
    811,951.83x = 503,469,054,446.27
  5. Step 5: Solve for x
    x = 503,469,054,446.27/811,951.83
  6. Step 6: Final answer
    x = 620,072.57

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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.