Home / 813,711.33-1,220,427.68-214,678.67

Finding the Fourth Proportional to 813,711.33, 1,220,427.68 and 214,678.67

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Solution

The fourth proportional to 813,711.33, 1,220,427.68 and 214,678.67 is: 321,981.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,711.33 : 1,220,427.68 = 214,678.67 : x
  2. Step 2: Convert to fraction form
    813,711.33/1,220,427.68 = 214,678.67/x
  3. Step 3: Cross multiply
    813,711.33x = 1,220,427.68 × 214,678.67
  4. Step 4: Simplify right side
    813,711.33x = 261,999,783,998.05
  5. Step 5: Solve for x
    x = 261,999,783,998.05/813,711.33
  6. Step 6: Final answer
    x = 321,981.24

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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.