Home / 813,754.15-1,220,464.46-308,140.71

Finding the Fourth Proportional to 813,754.15, 1,220,464.46 and 308,140.71

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Solution

The fourth proportional to 813,754.15, 1,220,464.46 and 308,140.71 is: 462,147.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,754.15 : 1,220,464.46 = 308,140.71 : x
  2. Step 2: Convert to fraction form
    813,754.15/1,220,464.46 = 308,140.71/x
  3. Step 3: Cross multiply
    813,754.15x = 1,220,464.46 × 308,140.71
  4. Step 4: Simplify right side
    813,754.15x = 376,074,781,427.78
  5. Step 5: Solve for x
    x = 376,074,781,427.78/813,754.15
  6. Step 6: Final answer
    x = 462,147.91

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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.