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Finding the Fourth Proportional to 1,367,800, 1,887,564.80 and 764,188

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Solution

The fourth proportional to 1,367,800, 1,887,564.80 and 764,188 is: 1,054,579.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,367,800 : 1,887,564.80 = 764,188 : x
  2. Step 2: Convert to fraction form
    1,367,800/1,887,564.80 = 764,188/x
  3. Step 3: Cross multiply
    1,367,800x = 1,887,564.80 × 764,188
  4. Step 4: Simplify right side
    1,367,800x = 1,442,454,369,382.40
  5. Step 5: Solve for x
    x = 1,442,454,369,382.40/1,367,800
  6. Step 6: Final answer
    x = 1,054,579.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.