Home / 1,505,782.31-2,078,322.50-861,557.72

Finding the Fourth Proportional to 1,505,782.31, 2,078,322.50 and 861,557.72

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Solution

The fourth proportional to 1,505,782.31, 2,078,322.50 and 861,557.72 is: 1,189,145.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,505,782.31 : 2,078,322.50 = 861,557.72 : x
  2. Step 2: Convert to fraction form
    1,505,782.31/2,078,322.50 = 861,557.72/x
  3. Step 3: Cross multiply
    1,505,782.31x = 2,078,322.50 × 861,557.72
  4. Step 4: Simplify right side
    1,505,782.31x = 1,790,594,786,286.98
  5. Step 5: Solve for x
    x = 1,790,594,786,286.98/1,505,782.31
  6. Step 6: Final answer
    x = 1,189,145.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.