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Finding the Fourth Proportional to 400,893.57, 552,889.80 and 285,953.22

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Solution

The fourth proportional to 400,893.57, 552,889.80 and 285,953.22 is: 394,370.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,893.57 : 552,889.80 = 285,953.22 : x
  2. Step 2: Convert to fraction form
    400,893.57/552,889.80 = 285,953.22/x
  3. Step 3: Cross multiply
    400,893.57x = 552,889.80 × 285,953.22
  4. Step 4: Simplify right side
    400,893.57x = 158,100,618,615.16
  5. Step 5: Solve for x
    x = 158,100,618,615.16/400,893.57
  6. Step 6: Final answer
    x = 394,370.55

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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.