Home / 641,997.09-885,955.19-355,516.83

Finding the Fourth Proportional to 641,997.09, 885,955.19 and 355,516.83

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Solution

The fourth proportional to 641,997.09, 885,955.19 and 355,516.83 is: 490,612.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,997.09 : 885,955.19 = 355,516.83 : x
  2. Step 2: Convert to fraction form
    641,997.09/885,955.19 = 355,516.83/x
  3. Step 3: Cross multiply
    641,997.09x = 885,955.19 × 355,516.83
  4. Step 4: Simplify right side
    641,997.09x = 314,971,978,893.26
  5. Step 5: Solve for x
    x = 314,971,978,893.26/641,997.09
  6. Step 6: Final answer
    x = 490,612.78

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1.5x scale

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.