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Finding the Fourth Proportional to 3,869,658.93, 5,804,610.51 and 991,043.88

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Solution

The fourth proportional to 3,869,658.93, 5,804,610.51 and 991,043.88 is: 1,486,597.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869,658.93 : 5,804,610.51 = 991,043.88 : x
  2. Step 2: Convert to fraction form
    3,869,658.93/5,804,610.51 = 991,043.88/x
  3. Step 3: Cross multiply
    3,869,658.93x = 5,804,610.51 × 991,043.88
  4. Step 4: Simplify right side
    3,869,658.93x = 5,752,623,721,719.18
  5. Step 5: Solve for x
    x = 5,752,623,721,719.18/3,869,658.93
  6. Step 6: Final answer
    x = 1,486,597.09

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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.