Home / 639,450.15-959,084.51-218,664.87

Finding the Fourth Proportional to 639,450.15, 959,084.51 and 218,664.87

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Solution

The fourth proportional to 639,450.15, 959,084.51 and 218,664.87 is: 327,966.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,450.15 : 959,084.51 = 218,664.87 : x
  2. Step 2: Convert to fraction form
    639,450.15/959,084.51 = 218,664.87/x
  3. Step 3: Cross multiply
    639,450.15x = 959,084.51 × 218,664.87
  4. Step 4: Simplify right side
    639,450.15x = 209,718,088,604.84
  5. Step 5: Solve for x
    x = 209,718,088,604.84/639,450.15
  6. Step 6: Final answer
    x = 327,966.28

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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.