Home / 821,679.40-1,233,786.30-448,431.40

Finding the Fourth Proportional to 821,679.40, 1,233,786.30 and 448,431.40

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Solution

The fourth proportional to 821,679.40, 1,233,786.30 and 448,431.40 is: 673,338.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,679.40 : 1,233,786.30 = 448,431.40 : x
  2. Step 2: Convert to fraction form
    821,679.40/1,233,786.30 = 448,431.40/x
  3. Step 3: Cross multiply
    821,679.40x = 1,233,786.30 × 448,431.40
  4. Step 4: Simplify right side
    821,679.40x = 553,268,517,809.82
  5. Step 5: Solve for x
    x = 553,268,517,809.82/821,679.40
  6. Step 6: Final answer
    x = 673,338.67

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Double scale
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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.