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Finding the Fourth Proportional to 591,878.26, 816,255.77 and 387,855.07

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Solution

The fourth proportional to 591,878.26, 816,255.77 and 387,855.07 is: 534,888.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,878.26 : 816,255.77 = 387,855.07 : x
  2. Step 2: Convert to fraction form
    591,878.26/816,255.77 = 387,855.07/x
  3. Step 3: Cross multiply
    591,878.26x = 816,255.77 × 387,855.07
  4. Step 4: Simplify right side
    591,878.26x = 316,588,938,811.25
  5. Step 5: Solve for x
    x = 316,588,938,811.25/591,878.26
  6. Step 6: Final answer
    x = 534,888.61

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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.