Home / 501,175.27-690,952.77-398,151.31

Finding the Fourth Proportional to 501,175.27, 690,952.77 and 398,151.31

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Solution

The fourth proportional to 501,175.27, 690,952.77 and 398,151.31 is: 548,917.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,175.27 : 690,952.77 = 398,151.31 : x
  2. Step 2: Convert to fraction form
    501,175.27/690,952.77 = 398,151.31/x
  3. Step 3: Cross multiply
    501,175.27x = 690,952.77 × 398,151.31
  4. Step 4: Simplify right side
    501,175.27x = 275,103,750,523.63
  5. Step 5: Solve for x
    x = 275,103,750,523.63/501,175.27
  6. Step 6: Final answer
    x = 548,917.25

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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.