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Finding the Fourth Proportional to 808,913, 1,116,299.94 and 451,217

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Solution

The fourth proportional to 808,913, 1,116,299.94 and 451,217 is: 622,679.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,913 : 1,116,299.94 = 451,217 : x
  2. Step 2: Convert to fraction form
    808,913/1,116,299.94 = 451,217/x
  3. Step 3: Cross multiply
    808,913x = 1,116,299.94 × 451,217
  4. Step 4: Simplify right side
    808,913x = 503,693,510,026.98
  5. Step 5: Solve for x
    x = 503,693,510,026.98/808,913
  6. Step 6: Final answer
    x = 622,679.46

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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.