Home / 813,959.30-1,220,772.66-308,345.96

Finding the Fourth Proportional to 813,959.30, 1,220,772.66 and 308,345.96

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Solution

The fourth proportional to 813,959.30, 1,220,772.66 and 308,345.96 is: 462,455.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,959.30 : 1,220,772.66 = 308,345.96 : x
  2. Step 2: Convert to fraction form
    813,959.30/1,220,772.66 = 308,345.96/x
  3. Step 3: Cross multiply
    813,959.30x = 1,220,772.66 × 308,345.96
  4. Step 4: Simplify right side
    813,959.30x = 376,420,317,789.45
  5. Step 5: Solve for x
    x = 376,420,317,789.45/813,959.30
  6. Step 6: Final answer
    x = 462,455.95

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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.