Home / 818,026.70-1,227,234.78-412,221.83

Finding the Fourth Proportional to 818,026.70, 1,227,234.78 and 412,221.83

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Solution

The fourth proportional to 818,026.70, 1,227,234.78 and 412,221.83 is: 618,430.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,026.70 : 1,227,234.78 = 412,221.83 : x
  2. Step 2: Convert to fraction form
    818,026.70/1,227,234.78 = 412,221.83/x
  3. Step 3: Cross multiply
    818,026.70x = 1,227,234.78 × 412,221.83
  4. Step 4: Simplify right side
    818,026.70x = 505,892,960,715.07
  5. Step 5: Solve for x
    x = 505,892,960,715.07/818,026.70
  6. Step 6: Final answer
    x = 618,430.87

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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.