Home / 814,947.56-1,221,923.10-388,613.78

Finding the Fourth Proportional to 814,947.56, 1,221,923.10 and 388,613.78

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Solution

The fourth proportional to 814,947.56, 1,221,923.10 and 388,613.78 is: 582,683.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,947.56 : 1,221,923.10 = 388,613.78 : x
  2. Step 2: Convert to fraction form
    814,947.56/1,221,923.10 = 388,613.78/x
  3. Step 3: Cross multiply
    814,947.56x = 1,221,923.10 × 388,613.78
  4. Step 4: Simplify right side
    814,947.56x = 474,856,154,690.22
  5. Step 5: Solve for x
    x = 474,856,154,690.22/814,947.56
  6. Step 6: Final answer
    x = 582,683.08

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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.