Home / 639,377.54-882,278.18-352,879.17

Finding the Fourth Proportional to 639,377.54, 882,278.18 and 352,879.17

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Solution

The fourth proportional to 639,377.54, 882,278.18 and 352,879.17 is: 486,938.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,377.54 : 882,278.18 = 352,879.17 : x
  2. Step 2: Convert to fraction form
    639,377.54/882,278.18 = 352,879.17/x
  3. Step 3: Cross multiply
    639,377.54x = 882,278.18 × 352,879.17
  4. Step 4: Simplify right side
    639,377.54x = 311,337,591,867.51
  5. Step 5: Solve for x
    x = 311,337,591,867.51/639,377.54
  6. Step 6: Final answer
    x = 486,938.58

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.