Home / 639,342.72-882,288.60-352,862.82

Finding the Fourth Proportional to 639,342.72, 882,288.60 and 352,862.82

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Solution

The fourth proportional to 639,342.72, 882,288.60 and 352,862.82 is: 486,948.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,342.72 : 882,288.60 = 352,862.82 : x
  2. Step 2: Convert to fraction form
    639,342.72/882,288.60 = 352,862.82/x
  3. Step 3: Cross multiply
    639,342.72x = 882,288.60 × 352,862.82
  4. Step 4: Simplify right side
    639,342.72x = 311,326,843,449.85
  5. Step 5: Solve for x
    x = 311,326,843,449.85/639,342.72
  6. Step 6: Final answer
    x = 486,948.29

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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.