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Finding the Fourth Proportional to 681,264.16, 940,144.80 and 394,950.22

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Solution

The fourth proportional to 681,264.16, 940,144.80 and 394,950.22 is: 545,031.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,264.16 : 940,144.80 = 394,950.22 : x
  2. Step 2: Convert to fraction form
    681,264.16/940,144.80 = 394,950.22/x
  3. Step 3: Cross multiply
    681,264.16x = 940,144.80 × 394,950.22
  4. Step 4: Simplify right side
    681,264.16x = 371,310,395,591.86
  5. Step 5: Solve for x
    x = 371,310,395,591.86/681,264.16
  6. Step 6: Final answer
    x = 545,031.45

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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.