Home / 639,118.25-881,982.57-352,638.36

Finding the Fourth Proportional to 639,118.25, 881,982.57 and 352,638.36

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Solution

The fourth proportional to 639,118.25, 881,982.57 and 352,638.36 is: 486,640.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,118.25 : 881,982.57 = 352,638.36 : x
  2. Step 2: Convert to fraction form
    639,118.25/881,982.57 = 352,638.36/x
  3. Step 3: Cross multiply
    639,118.25x = 881,982.57 × 352,638.36
  4. Step 4: Simplify right side
    639,118.25x = 311,020,888,355.78
  5. Step 5: Solve for x
    x = 311,020,888,355.78/639,118.25
  6. Step 6: Final answer
    x = 486,640.60

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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.