Home / 728,719.80-1,092,885.30-255,355.80

Finding the Fourth Proportional to 728,719.80, 1,092,885.30 and 255,355.80

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Solution

The fourth proportional to 728,719.80, 1,092,885.30 and 255,355.80 is: 382,965.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,719.80 : 1,092,885.30 = 255,355.80 : x
  2. Step 2: Convert to fraction form
    728,719.80/1,092,885.30 = 255,355.80/x
  3. Step 3: Cross multiply
    728,719.80x = 1,092,885.30 × 255,355.80
  4. Step 4: Simplify right side
    728,719.80x = 279,074,600,089.74
  5. Step 5: Solve for x
    x = 279,074,600,089.74/728,719.80
  6. Step 6: Final answer
    x = 382,965.58

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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.