Home / 639,243.10-882,129.66-352,759.45

Finding the Fourth Proportional to 639,243.10, 882,129.66 and 352,759.45

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Solution

The fourth proportional to 639,243.10, 882,129.66 and 352,759.45 is: 486,793.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,243.10 : 882,129.66 = 352,759.45 : x
  2. Step 2: Convert to fraction form
    639,243.10/882,129.66 = 352,759.45/x
  3. Step 3: Cross multiply
    639,243.10x = 882,129.66 × 352,759.45
  4. Step 4: Simplify right side
    639,243.10x = 311,179,573,690.29
  5. Step 5: Solve for x
    x = 311,179,573,690.29/639,243.10
  6. Step 6: Final answer
    x = 486,793.79

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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.