Home / 780,282.50-1,170,423.75-189,306.50

Finding the Fourth Proportional to 780,282.50, 1,170,423.75 and 189,306.50

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Solution

The fourth proportional to 780,282.50, 1,170,423.75 and 189,306.50 is: 283,959.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,282.50 : 1,170,423.75 = 189,306.50 : x
  2. Step 2: Convert to fraction form
    780,282.50/1,170,423.75 = 189,306.50/x
  3. Step 3: Cross multiply
    780,282.50x = 1,170,423.75 × 189,306.50
  4. Step 4: Simplify right side
    780,282.50x = 221,568,823,629.38
  5. Step 5: Solve for x
    x = 221,568,823,629.38/780,282.50
  6. Step 6: Final answer
    x = 283,959.75

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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.