Home / 725,840.42-1,088,690.24-220,405.78

Finding the Fourth Proportional to 725,840.42, 1,088,690.24 and 220,405.78

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Solution

The fourth proportional to 725,840.42, 1,088,690.24 and 220,405.78 is: 330,587.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,840.42 : 1,088,690.24 = 220,405.78 : x
  2. Step 2: Convert to fraction form
    725,840.42/1,088,690.24 = 220,405.78/x
  3. Step 3: Cross multiply
    725,840.42x = 1,088,690.24 × 220,405.78
  4. Step 4: Simplify right side
    725,840.42x = 239,953,621,525.59
  5. Step 5: Solve for x
    x = 239,953,621,525.59/725,840.42
  6. Step 6: Final answer
    x = 330,587.30

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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.