Home / 639,217.40-882,122.60-352,745.76

Finding the Fourth Proportional to 639,217.40, 882,122.60 and 352,745.76

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Solution

The fourth proportional to 639,217.40, 882,122.60 and 352,745.76 is: 486,790.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,217.40 : 882,122.60 = 352,745.76 : x
  2. Step 2: Convert to fraction form
    639,217.40/882,122.60 = 352,745.76/x
  3. Step 3: Cross multiply
    639,217.40x = 882,122.60 × 352,745.76
  4. Step 4: Simplify right side
    639,217.40x = 311,165,006,950.18
  5. Step 5: Solve for x
    x = 311,165,006,950.18/639,217.40
  6. Step 6: Final answer
    x = 486,790.58

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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.