Home / 813,987.28-1,220,814.68-308,373.96

Finding the Fourth Proportional to 813,987.28, 1,220,814.68 and 308,373.96

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Solution

The fourth proportional to 813,987.28, 1,220,814.68 and 308,373.96 is: 462,497.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,987.28 : 1,220,814.68 = 308,373.96 : x
  2. Step 2: Convert to fraction form
    813,987.28/1,220,814.68 = 308,373.96/x
  3. Step 3: Cross multiply
    813,987.28x = 1,220,814.68 × 308,373.96
  4. Step 4: Simplify right side
    813,987.28x = 376,467,457,297.73
  5. Step 5: Solve for x
    x = 376,467,457,297.73/813,987.28
  6. Step 6: Final answer
    x = 462,497.96

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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.