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Finding the Fourth Proportional to 538,906.30, 808,359.45 and 328,954.30

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Solution

The fourth proportional to 538,906.30, 808,359.45 and 328,954.30 is: 493,431.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,906.30 : 808,359.45 = 328,954.30 : x
  2. Step 2: Convert to fraction form
    538,906.30/808,359.45 = 328,954.30/x
  3. Step 3: Cross multiply
    538,906.30x = 808,359.45 × 328,954.30
  4. Step 4: Simplify right side
    538,906.30x = 265,913,317,023.14
  5. Step 5: Solve for x
    x = 265,913,317,023.14/538,906.30
  6. Step 6: Final answer
    x = 493,431.45

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Double scale
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Similar ratio
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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.