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Finding the Fourth Proportional to 3,557,395, 5,336,106 and 861,715

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Solution

The fourth proportional to 3,557,395, 5,336,106 and 861,715 is: 1,292,575.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,557,395 : 5,336,106 = 861,715 : x
  2. Step 2: Convert to fraction form
    3,557,395/5,336,106 = 861,715/x
  3. Step 3: Cross multiply
    3,557,395x = 5,336,106 × 861,715
  4. Step 4: Simplify right side
    3,557,395x = 4,598,202,581,790
  5. Step 5: Solve for x
    x = 4,598,202,581,790/3,557,395
  6. Step 6: Final answer
    x = 1,292,575.77

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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.