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Finding the Fourth Proportional to 768,917.10, 1,061,085.03 and 424,745.61

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Solution

The fourth proportional to 768,917.10, 1,061,085.03 and 424,745.61 is: 586,137.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,917.10 : 1,061,085.03 = 424,745.61 : x
  2. Step 2: Convert to fraction form
    768,917.10/1,061,085.03 = 424,745.61/x
  3. Step 3: Cross multiply
    768,917.10x = 1,061,085.03 × 424,745.61
  4. Step 4: Simplify right side
    768,917.10x = 450,691,208,329.22
  5. Step 5: Solve for x
    x = 450,691,208,329.22/768,917.10
  6. Step 6: Final answer
    x = 586,137.58

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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.