Home / 1,314,149.82-1,971,418.84-415,387.60

Finding the Fourth Proportional to 1,314,149.82, 1,971,418.84 and 415,387.60

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Solution

The fourth proportional to 1,314,149.82, 1,971,418.84 and 415,387.60 is: 623,142.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314,149.82 : 1,971,418.84 = 415,387.60 : x
  2. Step 2: Convert to fraction form
    1,314,149.82/1,971,418.84 = 415,387.60/x
  3. Step 3: Cross multiply
    1,314,149.82x = 1,971,418.84 × 415,387.60
  4. Step 4: Simplify right side
    1,314,149.82x = 818,902,940,542.38
  5. Step 5: Solve for x
    x = 818,902,940,542.38/1,314,149.82
  6. Step 6: Final answer
    x = 623,142.76

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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.