Home / 639,385.31-882,288.86-352,886.92

Finding the Fourth Proportional to 639,385.31, 882,288.86 and 352,886.92

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Solution

The fourth proportional to 639,385.31, 882,288.86 and 352,886.92 is: 486,949.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,385.31 : 882,288.86 = 352,886.92 : x
  2. Step 2: Convert to fraction form
    639,385.31/882,288.86 = 352,886.92/x
  3. Step 3: Cross multiply
    639,385.31x = 882,288.86 × 352,886.92
  4. Step 4: Simplify right side
    639,385.31x = 311,348,198,355.71
  5. Step 5: Solve for x
    x = 311,348,198,355.71/639,385.31
  6. Step 6: Final answer
    x = 486,949.25

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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.