Home / 813,961.80-1,220,776.41-308,348.46

Finding the Fourth Proportional to 813,961.80, 1,220,776.41 and 308,348.46

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Solution

The fourth proportional to 813,961.80, 1,220,776.41 and 308,348.46 is: 462,459.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,961.80 : 1,220,776.41 = 308,348.46 : x
  2. Step 2: Convert to fraction form
    813,961.80/1,220,776.41 = 308,348.46/x
  3. Step 3: Cross multiply
    813,961.80x = 1,220,776.41 × 308,348.46
  4. Step 4: Simplify right side
    813,961.80x = 376,424,526,027.83
  5. Step 5: Solve for x
    x = 376,424,526,027.83/813,961.80
  6. Step 6: Final answer
    x = 462,459.70

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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.