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Finding the Fourth Proportional to 1,368,314, 1,888,331.68 and 764,702

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Solution

The fourth proportional to 1,368,314, 1,888,331.68 and 764,702 is: 1,055,321.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368,314 : 1,888,331.68 = 764,702 : x
  2. Step 2: Convert to fraction form
    1,368,314/1,888,331.68 = 764,702/x
  3. Step 3: Cross multiply
    1,368,314x = 1,888,331.68 × 764,702
  4. Step 4: Simplify right side
    1,368,314x = 1,444,011,012,359.36
  5. Step 5: Solve for x
    x = 1,444,011,012,359.36/1,368,314
  6. Step 6: Final answer
    x = 1,055,321.38

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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.