Home / 1,692,128.52-2,538,620.46-780,872.04

Finding the Fourth Proportional to 1,692,128.52, 2,538,620.46 and 780,872.04

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Solution

The fourth proportional to 1,692,128.52, 2,538,620.46 and 780,872.04 is: 1,171,505.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,692,128.52 : 2,538,620.46 = 780,872.04 : x
  2. Step 2: Convert to fraction form
    1,692,128.52/2,538,620.46 = 780,872.04/x
  3. Step 3: Cross multiply
    1,692,128.52x = 2,538,620.46 × 780,872.04
  4. Step 4: Simplify right side
    1,692,128.52x = 1,982,337,737,385.94
  5. Step 5: Solve for x
    x = 1,982,337,737,385.94/1,692,128.52
  6. Step 6: Final answer
    x = 1,171,505.42

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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.