Home / 400,190.40-599,556.60-316,501.20

Finding the Fourth Proportional to 400,190.40, 599,556.60 and 316,501.20

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Solution

The fourth proportional to 400,190.40, 599,556.60 and 316,501.20 is: 474,175.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,190.40 : 599,556.60 = 316,501.20 : x
  2. Step 2: Convert to fraction form
    400,190.40/599,556.60 = 316,501.20/x
  3. Step 3: Cross multiply
    400,190.40x = 599,556.60 × 316,501.20
  4. Step 4: Simplify right side
    400,190.40x = 189,760,383,367.92
  5. Step 5: Solve for x
    x = 189,760,383,367.92/400,190.40
  6. Step 6: Final answer
    x = 474,175.25

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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.