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Finding the Fourth Proportional to 521,338.32, 718,833.92 and 417,889.80

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Solution

The fourth proportional to 521,338.32, 718,833.92 and 417,889.80 is: 576,196.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,338.32 : 718,833.92 = 417,889.80 : x
  2. Step 2: Convert to fraction form
    521,338.32/718,833.92 = 417,889.80/x
  3. Step 3: Cross multiply
    521,338.32x = 718,833.92 × 417,889.80
  4. Step 4: Simplify right side
    521,338.32x = 300,393,363,062.02
  5. Step 5: Solve for x
    x = 300,393,363,062.02/521,338.32
  6. Step 6: Final answer
    x = 576,196.59

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.