Home / 728,686.80-1,093,030.20-255,310.65

Finding the Fourth Proportional to 728,686.80, 1,093,030.20 and 255,310.65

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Solution

The fourth proportional to 728,686.80, 1,093,030.20 and 255,310.65 is: 382,965.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,686.80 : 1,093,030.20 = 255,310.65 : x
  2. Step 2: Convert to fraction form
    728,686.80/1,093,030.20 = 255,310.65/x
  3. Step 3: Cross multiply
    728,686.80x = 1,093,030.20 × 255,310.65
  4. Step 4: Simplify right side
    728,686.80x = 279,062,250,831.63
  5. Step 5: Solve for x
    x = 279,062,250,831.63/728,686.80
  6. Step 6: Final answer
    x = 382,965.98

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Double scale
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Similar ratio
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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.