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Finding the Fourth Proportional to 3,896,307.90, 5,845,383.45 and 1,236,915.90

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Solution

The fourth proportional to 3,896,307.90, 5,845,383.45 and 1,236,915.90 is: 1,855,666.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,896,307.90 : 5,845,383.45 = 1,236,915.90 : x
  2. Step 2: Convert to fraction form
    3,896,307.90/5,845,383.45 = 1,236,915.90/x
  3. Step 3: Cross multiply
    3,896,307.90x = 5,845,383.45 × 1,236,915.90
  4. Step 4: Simplify right side
    3,896,307.90x = 7,230,247,730,901.86
  5. Step 5: Solve for x
    x = 7,230,247,730,901.86/3,896,307.90
  6. Step 6: Final answer
    x = 1,855,666.42

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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.