Home / 814,362.72-1,221,544.08-253,285.44

Finding the Fourth Proportional to 814,362.72, 1,221,544.08 and 253,285.44

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Solution

The fourth proportional to 814,362.72, 1,221,544.08 and 253,285.44 is: 379,928.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,362.72 : 1,221,544.08 = 253,285.44 : x
  2. Step 2: Convert to fraction form
    814,362.72/1,221,544.08 = 253,285.44/x
  3. Step 3: Cross multiply
    814,362.72x = 1,221,544.08 × 253,285.44
  4. Step 4: Simplify right side
    814,362.72x = 309,399,329,782.20
  5. Step 5: Solve for x
    x = 309,399,329,782.20/814,362.72
  6. Step 6: Final answer
    x = 379,928.16

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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.