Home / 639,144.60-882,018.88-352,664.67

Finding the Fourth Proportional to 639,144.60, 882,018.88 and 352,664.67

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Solution

The fourth proportional to 639,144.60, 882,018.88 and 352,664.67 is: 486,676.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,144.60 : 882,018.88 = 352,664.67 : x
  2. Step 2: Convert to fraction form
    639,144.60/882,018.88 = 352,664.67/x
  3. Step 3: Cross multiply
    639,144.60x = 882,018.88 × 352,664.67
  4. Step 4: Simplify right side
    639,144.60x = 311,056,897,248.97
  5. Step 5: Solve for x
    x = 311,056,897,248.97/639,144.60
  6. Step 6: Final answer
    x = 486,676.88

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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.