Home / 818,308.56-1,227,462.76-312,920.66

Finding the Fourth Proportional to 818,308.56, 1,227,462.76 and 312,920.66

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Solution

The fourth proportional to 818,308.56, 1,227,462.76 and 312,920.66 is: 469,380.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,308.56 : 1,227,462.76 = 312,920.66 : x
  2. Step 2: Convert to fraction form
    818,308.56/1,227,462.76 = 312,920.66/x
  3. Step 3: Cross multiply
    818,308.56x = 1,227,462.76 × 312,920.66
  4. Step 4: Simplify right side
    818,308.56x = 384,098,453,539.95
  5. Step 5: Solve for x
    x = 384,098,453,539.95/818,308.56
  6. Step 6: Final answer
    x = 469,380.95

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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.