Home / 1,268,909.75-1,751,109.01-688,133.95

Finding the Fourth Proportional to 1,268,909.75, 1,751,109.01 and 688,133.95

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Solution

The fourth proportional to 1,268,909.75, 1,751,109.01 and 688,133.95 is: 949,632.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268,909.75 : 1,751,109.01 = 688,133.95 : x
  2. Step 2: Convert to fraction form
    1,268,909.75/1,751,109.01 = 688,133.95/x
  3. Step 3: Cross multiply
    1,268,909.75x = 1,751,109.01 × 688,133.95
  4. Step 4: Simplify right side
    1,268,909.75x = 1,204,997,553,833.78
  5. Step 5: Solve for x
    x = 1,204,997,553,833.78/1,268,909.75
  6. Step 6: Final answer
    x = 949,632.20

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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.