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Finding the Fourth Proportional to 681,625.64, 940,647.12 and 395,315.48

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Solution

The fourth proportional to 681,625.64, 940,647.12 and 395,315.48 is: 545,537.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,625.64 : 940,647.12 = 395,315.48 : x
  2. Step 2: Convert to fraction form
    681,625.64/940,647.12 = 395,315.48/x
  3. Step 3: Cross multiply
    681,625.64x = 940,647.12 × 395,315.48
  4. Step 4: Simplify right side
    681,625.64x = 371,852,367,753.42
  5. Step 5: Solve for x
    x = 371,852,367,753.42/681,625.64
  6. Step 6: Final answer
    x = 545,537.53

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1.5x scale

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.