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Finding the Fourth Proportional to 802,910, 1,108,015.80 and 445,214

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Solution

The fourth proportional to 802,910, 1,108,015.80 and 445,214 is: 614,395.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,910 : 1,108,015.80 = 445,214 : x
  2. Step 2: Convert to fraction form
    802,910/1,108,015.80 = 445,214/x
  3. Step 3: Cross multiply
    802,910x = 1,108,015.80 × 445,214
  4. Step 4: Simplify right side
    802,910x = 493,304,146,381.20
  5. Step 5: Solve for x
    x = 493,304,146,381.20/802,910
  6. Step 6: Final answer
    x = 614,395.32

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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.