Home / 639,936.92-959,534.00-302,974.72

Finding the Fourth Proportional to 639,936.92, 959,534.00 and 302,974.72

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Solution

The fourth proportional to 639,936.92, 959,534.00 and 302,974.72 is: 454,286.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,936.92 : 959,534.00 = 302,974.72 : x
  2. Step 2: Convert to fraction form
    639,936.92/959,534.00 = 302,974.72/x
  3. Step 3: Cross multiply
    639,936.92x = 959,534.00 × 302,974.72
  4. Step 4: Simplify right side
    639,936.92x = 290,714,546,937.33
  5. Step 5: Solve for x
    x = 290,714,546,937.33/639,936.92
  6. Step 6: Final answer
    x = 454,286.26

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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.