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Finding the Fourth Proportional to 538,128.80, 807,193.20 and 403,409.60

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Solution

The fourth proportional to 538,128.80, 807,193.20 and 403,409.60 is: 605,114.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,128.80 : 807,193.20 = 403,409.60 : x
  2. Step 2: Convert to fraction form
    538,128.80/807,193.20 = 403,409.60/x
  3. Step 3: Cross multiply
    538,128.80x = 807,193.20 × 403,409.60
  4. Step 4: Simplify right side
    538,128.80x = 325,629,485,934.72
  5. Step 5: Solve for x
    x = 325,629,485,934.72/538,128.80
  6. Step 6: Final answer
    x = 605,114.40

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Similar ratio
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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.