Home / 639,664.75-959,501.99-218,944.27

Finding the Fourth Proportional to 639,664.75, 959,501.99 and 218,944.27

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Solution

The fourth proportional to 639,664.75, 959,501.99 and 218,944.27 is: 328,418.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,664.75 : 959,501.99 = 218,944.27 : x
  2. Step 2: Convert to fraction form
    639,664.75/959,501.99 = 218,944.27/x
  3. Step 3: Cross multiply
    639,664.75x = 959,501.99 × 218,944.27
  4. Step 4: Simplify right side
    639,664.75x = 210,077,462,764.10
  5. Step 5: Solve for x
    x = 210,077,462,764.10/639,664.75
  6. Step 6: Final answer
    x = 328,418.07

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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.