Home / 858,781.35-1,288,374.32-259,747.47

Finding the Fourth Proportional to 858,781.35, 1,288,374.32 and 259,747.47

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Solution

The fourth proportional to 858,781.35, 1,288,374.32 and 259,747.47 is: 389,682.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,781.35 : 1,288,374.32 = 259,747.47 : x
  2. Step 2: Convert to fraction form
    858,781.35/1,288,374.32 = 259,747.47/x
  3. Step 3: Cross multiply
    858,781.35x = 1,288,374.32 × 259,747.47
  4. Step 4: Simplify right side
    858,781.35x = 334,651,970,682.34
  5. Step 5: Solve for x
    x = 334,651,970,682.34/858,781.35
  6. Step 6: Final answer
    x = 389,682.39

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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.