Home / 1,311,209.89-1,809,525.44-730,432.31

Finding the Fourth Proportional to 1,311,209.89, 1,809,525.44 and 730,432.31

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Solution

The fourth proportional to 1,311,209.89, 1,809,525.44 and 730,432.31 is: 1,008,027.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,209.89 : 1,809,525.44 = 730,432.31 : x
  2. Step 2: Convert to fraction form
    1,311,209.89/1,809,525.44 = 730,432.31/x
  3. Step 3: Cross multiply
    1,311,209.89x = 1,809,525.44 × 730,432.31
  4. Step 4: Simplify right side
    1,311,209.89x = 1,321,735,839,921.42
  5. Step 5: Solve for x
    x = 1,321,735,839,921.42/1,311,209.89
  6. Step 6: Final answer
    x = 1,008,027.66

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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.