Home / 643,695.76-965,544.45-222,971.59

Finding the Fourth Proportional to 643,695.76, 965,544.45 and 222,971.59

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Solution

The fourth proportional to 643,695.76, 965,544.45 and 222,971.59 is: 334,457.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,695.76 : 965,544.45 = 222,971.59 : x
  2. Step 2: Convert to fraction form
    643,695.76/965,544.45 = 222,971.59/x
  3. Step 3: Cross multiply
    643,695.76x = 965,544.45 × 222,971.59
  4. Step 4: Simplify right side
    643,695.76x = 215,288,981,232.18
  5. Step 5: Solve for x
    x = 215,288,981,232.18/643,695.76
  6. Step 6: Final answer
    x = 334,457.67

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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.