Home / 869,790.86-1,305,018.44-491,139.15

Finding the Fourth Proportional to 869,790.86, 1,305,018.44 and 491,139.15

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Solution

The fourth proportional to 869,790.86, 1,305,018.44 and 491,139.15 is: 736,896.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,790.86 : 1,305,018.44 = 491,139.15 : x
  2. Step 2: Convert to fraction form
    869,790.86/1,305,018.44 = 491,139.15/x
  3. Step 3: Cross multiply
    869,790.86x = 1,305,018.44 × 491,139.15
  4. Step 4: Simplify right side
    869,790.86x = 640,945,641,848.18
  5. Step 5: Solve for x
    x = 640,945,641,848.18/869,790.86
  6. Step 6: Final answer
    x = 736,896.27

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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.