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Finding the Fourth Proportional to 1,368,481, 1,888,562.10 and 764,869

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Solution

The fourth proportional to 1,368,481, 1,888,562.10 and 764,869 is: 1,055,551.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368,481 : 1,888,562.10 = 764,869 : x
  2. Step 2: Convert to fraction form
    1,368,481/1,888,562.10 = 764,869/x
  3. Step 3: Cross multiply
    1,368,481x = 1,888,562.10 × 764,869
  4. Step 4: Simplify right side
    1,368,481x = 1,444,502,604,864.90
  5. Step 5: Solve for x
    x = 1,444,502,604,864.90/1,368,481
  6. Step 6: Final answer
    x = 1,055,551.82

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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.