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Finding the Fourth Proportional to 1,143,978.26, 1,715,977.57 and 291,051

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Solution

The fourth proportional to 1,143,978.26, 1,715,977.57 and 291,051 is: 436,579.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,143,978.26 : 1,715,977.57 = 291,051 : x
  2. Step 2: Convert to fraction form
    1,143,978.26/1,715,977.57 = 291,051/x
  3. Step 3: Cross multiply
    1,143,978.26x = 1,715,977.57 × 291,051
  4. Step 4: Simplify right side
    1,143,978.26x = 499,436,987,726.07
  5. Step 5: Solve for x
    x = 499,436,987,726.07/1,143,978.26
  6. Step 6: Final answer
    x = 436,579.09

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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.