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Finding the Fourth Proportional to 684,954, 945,469.68 and 398,714.64

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Solution

The fourth proportional to 684,954, 945,469.68 and 398,714.64 is: 550,361.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,954 : 945,469.68 = 398,714.64 : x
  2. Step 2: Convert to fraction form
    684,954/945,469.68 = 398,714.64/x
  3. Step 3: Cross multiply
    684,954x = 945,469.68 × 398,714.64
  4. Step 4: Simplify right side
    684,954x = 376,972,603,092.12
  5. Step 5: Solve for x
    x = 376,972,603,092.12/684,954
  6. Step 6: Final answer
    x = 550,361.93

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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.