Home / 893,556.30-1,340,334.45-388,359.30

Finding the Fourth Proportional to 893,556.30, 1,340,334.45 and 388,359.30

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Solution

The fourth proportional to 893,556.30, 1,340,334.45 and 388,359.30 is: 582,538.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,556.30 : 1,340,334.45 = 388,359.30 : x
  2. Step 2: Convert to fraction form
    893,556.30/1,340,334.45 = 388,359.30/x
  3. Step 3: Cross multiply
    893,556.30x = 1,340,334.45 × 388,359.30
  4. Step 4: Simplify right side
    893,556.30x = 520,531,348,767.89
  5. Step 5: Solve for x
    x = 520,531,348,767.89/893,556.30
  6. Step 6: Final answer
    x = 582,538.95

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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.