Home / 813,889.12-1,220,986.80-327,608.48

Finding the Fourth Proportional to 813,889.12, 1,220,986.80 and 327,608.48

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Solution

The fourth proportional to 813,889.12, 1,220,986.80 and 327,608.48 is: 491,474.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,889.12 : 1,220,986.80 = 327,608.48 : x
  2. Step 2: Convert to fraction form
    813,889.12/1,220,986.80 = 327,608.48/x
  3. Step 3: Cross multiply
    813,889.12x = 1,220,986.80 × 327,608.48
  4. Step 4: Simplify right side
    813,889.12x = 400,005,629,648.06
  5. Step 5: Solve for x
    x = 400,005,629,648.06/813,889.12
  6. Step 6: Final answer
    x = 491,474.35

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1.5x scale

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.