Home / 840,906.63-1,261,560.83-272,288.32

Finding the Fourth Proportional to 840,906.63, 1,261,560.83 and 272,288.32

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Solution

The fourth proportional to 840,906.63, 1,261,560.83 and 272,288.32 is: 408,497.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,906.63 : 1,261,560.83 = 272,288.32 : x
  2. Step 2: Convert to fraction form
    840,906.63/1,261,560.83 = 272,288.32/x
  3. Step 3: Cross multiply
    840,906.63x = 1,261,560.83 × 272,288.32
  4. Step 4: Simplify right side
    840,906.63x = 343,508,274,463.16
  5. Step 5: Solve for x
    x = 343,508,274,463.16/840,906.63
  6. Step 6: Final answer
    x = 408,497.52

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.