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Finding the Fourth Proportional to 684,219.97, 944,185.46 and 378,278.48

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Solution

The fourth proportional to 684,219.97, 944,185.46 and 378,278.48 is: 522,003.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,219.97 : 944,185.46 = 378,278.48 : x
  2. Step 2: Convert to fraction form
    684,219.97/944,185.46 = 378,278.48/x
  3. Step 3: Cross multiply
    684,219.97x = 944,185.46 × 378,278.48
  4. Step 4: Simplify right side
    684,219.97x = 357,165,043,953.06
  5. Step 5: Solve for x
    x = 357,165,043,953.06/684,219.97
  6. Step 6: Final answer
    x = 522,003.25

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Similar ratio
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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.