Home / 639,449.65-959,083.75-218,664.37

Finding the Fourth Proportional to 639,449.65, 959,083.75 and 218,664.37

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Solution

The fourth proportional to 639,449.65, 959,083.75 and 218,664.37 is: 327,965.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,449.65 : 959,083.75 = 218,664.37 : x
  2. Step 2: Convert to fraction form
    639,449.65/959,083.75 = 218,664.37/x
  3. Step 3: Cross multiply
    639,449.65x = 959,083.75 × 218,664.37
  4. Step 4: Simplify right side
    639,449.65x = 209,717,443,970.99
  5. Step 5: Solve for x
    x = 209,717,443,970.99/639,449.65
  6. Step 6: Final answer
    x = 327,965.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.