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Finding the Fourth Proportional to 681,315.44, 940,216.24 and 371,216.48

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Solution

The fourth proportional to 681,315.44, 940,216.24 and 371,216.48 is: 512,279.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,315.44 : 940,216.24 = 371,216.48 : x
  2. Step 2: Convert to fraction form
    681,315.44/940,216.24 = 371,216.48/x
  3. Step 3: Cross multiply
    681,315.44x = 940,216.24 × 371,216.48
  4. Step 4: Simplify right side
    681,315.44x = 349,023,763,051.64
  5. Step 5: Solve for x
    x = 349,023,763,051.64/681,315.44
  6. Step 6: Final answer
    x = 512,279.25

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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.