Home / 813,135.58-1,218,891.40-543,490.83

Finding the Fourth Proportional to 813,135.58, 1,218,891.40 and 543,490.83

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Solution

The fourth proportional to 813,135.58, 1,218,891.40 and 543,490.83 is: 814,693.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,135.58 : 1,218,891.40 = 543,490.83 : x
  2. Step 2: Convert to fraction form
    813,135.58/1,218,891.40 = 543,490.83/x
  3. Step 3: Cross multiply
    813,135.58x = 1,218,891.40 × 543,490.83
  4. Step 4: Simplify right side
    813,135.58x = 662,456,297,307.14
  5. Step 5: Solve for x
    x = 662,456,297,307.14/813,135.58
  6. Step 6: Final answer
    x = 814,693.53

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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.