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Finding the Fourth Proportional to 1,245,338.10, 1,868,597.64 and 740,895.63

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Solution

The fourth proportional to 1,245,338.10, 1,868,597.64 and 740,895.63 is: 1,111,694.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,338.10 : 1,868,597.64 = 740,895.63 : x
  2. Step 2: Convert to fraction form
    1,245,338.10/1,868,597.64 = 740,895.63/x
  3. Step 3: Cross multiply
    1,245,338.10x = 1,868,597.64 × 740,895.63
  4. Step 4: Simplify right side
    1,245,338.10x = 1,384,435,825,704.31
  5. Step 5: Solve for x
    x = 1,384,435,825,704.31/1,245,338.10
  6. Step 6: Final answer
    x = 1,111,694.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.