Home / 746,860.19-1,120,290.98-320,119.09

Finding the Fourth Proportional to 746,860.19, 1,120,290.98 and 320,119.09

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Solution

The fourth proportional to 746,860.19, 1,120,290.98 and 320,119.09 is: 480,178.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    746,860.19 : 1,120,290.98 = 320,119.09 : x
  2. Step 2: Convert to fraction form
    746,860.19/1,120,290.98 = 320,119.09/x
  3. Step 3: Cross multiply
    746,860.19x = 1,120,290.98 × 320,119.09
  4. Step 4: Simplify right side
    746,860.19x = 358,626,524,651.49
  5. Step 5: Solve for x
    x = 358,626,524,651.49/746,860.19
  6. Step 6: Final answer
    x = 480,178.93

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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.