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Finding the Fourth Proportional to 1,977,691.25, 2,964,777.56 and 715,238.21

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Solution

The fourth proportional to 1,977,691.25, 2,964,777.56 and 715,238.21 is: 1,072,221.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,977,691.25 : 2,964,777.56 = 715,238.21 : x
  2. Step 2: Convert to fraction form
    1,977,691.25/2,964,777.56 = 715,238.21/x
  3. Step 3: Cross multiply
    1,977,691.25x = 2,964,777.56 × 715,238.21
  4. Step 4: Simplify right side
    1,977,691.25x = 2,120,522,191,486.38
  5. Step 5: Solve for x
    x = 2,120,522,191,486.38/1,977,691.25
  6. Step 6: Final answer
    x = 1,072,221.05

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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.