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Finding the Fourth Proportional to 1,368,488, 1,888,571.76 and 764,876

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Solution

The fourth proportional to 1,368,488, 1,888,571.76 and 764,876 is: 1,055,561.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368,488 : 1,888,571.76 = 764,876 : x
  2. Step 2: Convert to fraction form
    1,368,488/1,888,571.76 = 764,876/x
  3. Step 3: Cross multiply
    1,368,488x = 1,888,571.76 × 764,876
  4. Step 4: Simplify right side
    1,368,488x = 1,444,523,213,501.76
  5. Step 5: Solve for x
    x = 1,444,523,213,501.76/1,368,488
  6. Step 6: Final answer
    x = 1,055,561.48

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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.