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Finding the Fourth Proportional to 1,368,307, 1,888,321.98 and 764,695

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Solution

The fourth proportional to 1,368,307, 1,888,321.98 and 764,695 is: 1,055,311.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368,307 : 1,888,321.98 = 764,695 : x
  2. Step 2: Convert to fraction form
    1,368,307/1,888,321.98 = 764,695/x
  3. Step 3: Cross multiply
    1,368,307x = 1,888,321.98 × 764,695
  4. Step 4: Simplify right side
    1,368,307x = 1,443,990,376,496.10
  5. Step 5: Solve for x
    x = 1,443,990,376,496.10/1,368,307
  6. Step 6: Final answer
    x = 1,055,311.69

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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.