Home / 919,276.39-1,378,924.32-279,684.25

Finding the Fourth Proportional to 919,276.39, 1,378,924.32 and 279,684.25

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Solution

The fourth proportional to 919,276.39, 1,378,924.32 and 279,684.25 is: 419,529.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,276.39 : 1,378,924.32 = 279,684.25 : x
  2. Step 2: Convert to fraction form
    919,276.39/1,378,924.32 = 279,684.25/x
  3. Step 3: Cross multiply
    919,276.39x = 1,378,924.32 × 279,684.25
  4. Step 4: Simplify right side
    919,276.39x = 385,663,414,245.96
  5. Step 5: Solve for x
    x = 385,663,414,245.96/919,276.39
  6. Step 6: Final answer
    x = 419,529.34

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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.