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Finding the Fourth Proportional to 808,090, 1,115,198.76 and 450,394

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Solution

The fourth proportional to 808,090, 1,115,198.76 and 450,394 is: 621,562.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,090 : 1,115,198.76 = 450,394 : x
  2. Step 2: Convert to fraction form
    808,090/1,115,198.76 = 450,394/x
  3. Step 3: Cross multiply
    808,090x = 1,115,198.76 × 450,394
  4. Step 4: Simplify right side
    808,090x = 502,278,830,311.44
  5. Step 5: Solve for x
    x = 502,278,830,311.44/808,090
  6. Step 6: Final answer
    x = 621,562.98

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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.