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Finding the Fourth Proportional to 1,966,808.40, 2,949,629.40 and 768,040.80

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Solution

The fourth proportional to 1,966,808.40, 2,949,629.40 and 768,040.80 is: 1,151,833.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,966,808.40 : 2,949,629.40 = 768,040.80 : x
  2. Step 2: Convert to fraction form
    1,966,808.40/2,949,629.40 = 768,040.80/x
  3. Step 3: Cross multiply
    1,966,808.40x = 2,949,629.40 × 768,040.80
  4. Step 4: Simplify right side
    1,966,808.40x = 2,265,435,724,079.52
  5. Step 5: Solve for x
    x = 2,265,435,724,079.52/1,966,808.40
  6. Step 6: Final answer
    x = 1,151,833.46

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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.