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Finding the Fourth Proportional to 1,268,650.74, 1,749,044.09 and 1,007,871.14

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Solution

The fourth proportional to 1,268,650.74, 1,749,044.09 and 1,007,871.14 is: 1,389,516.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268,650.74 : 1,749,044.09 = 1,007,871.14 : x
  2. Step 2: Convert to fraction form
    1,268,650.74/1,749,044.09 = 1,007,871.14/x
  3. Step 3: Cross multiply
    1,268,650.74x = 1,749,044.09 × 1,007,871.14
  4. Step 4: Simplify right side
    1,268,650.74x = 1,762,811,047,113.99
  5. Step 5: Solve for x
    x = 1,762,811,047,113.99/1,268,650.74
  6. Step 6: Final answer
    x = 1,389,516.43

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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.