Home / 1,188,784.56-1,641,087.36-753,419.28

Finding the Fourth Proportional to 1,188,784.56, 1,641,087.36 and 753,419.28

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Solution

The fourth proportional to 1,188,784.56, 1,641,087.36 and 753,419.28 is: 1,040,076.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,784.56 : 1,641,087.36 = 753,419.28 : x
  2. Step 2: Convert to fraction form
    1,188,784.56/1,641,087.36 = 753,419.28/x
  3. Step 3: Cross multiply
    1,188,784.56x = 1,641,087.36 × 753,419.28
  4. Step 4: Simplify right side
    1,188,784.56x = 1,236,426,857,188.30
  5. Step 5: Solve for x
    x = 1,236,426,857,188.30/1,188,784.56
  6. Step 6: Final answer
    x = 1,040,076.48

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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.