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Finding the Fourth Proportional to 538,229.81, 807,345.84 and 505,346.90

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Solution

The fourth proportional to 538,229.81, 807,345.84 and 505,346.90 is: 758,021.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,229.81 : 807,345.84 = 505,346.90 : x
  2. Step 2: Convert to fraction form
    538,229.81/807,345.84 = 505,346.90/x
  3. Step 3: Cross multiply
    538,229.81x = 807,345.84 × 505,346.90
  4. Step 4: Simplify right side
    538,229.81x = 407,989,713,435.17
  5. Step 5: Solve for x
    x = 407,989,713,435.17/538,229.81
  6. Step 6: Final answer
    x = 758,021.41

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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.