Home / 813,985.28-1,220,811.68-308,371.96

Finding the Fourth Proportional to 813,985.28, 1,220,811.68 and 308,371.96

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Solution

The fourth proportional to 813,985.28, 1,220,811.68 and 308,371.96 is: 462,494.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,985.28 : 1,220,811.68 = 308,371.96 : x
  2. Step 2: Convert to fraction form
    813,985.28/1,220,811.68 = 308,371.96/x
  3. Step 3: Cross multiply
    813,985.28x = 1,220,811.68 × 308,371.96
  4. Step 4: Simplify right side
    813,985.28x = 376,464,090,552.49
  5. Step 5: Solve for x
    x = 376,464,090,552.49/813,985.28
  6. Step 6: Final answer
    x = 462,494.96

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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.