Home / 919,275.39-1,378,922.82-279,683.25

Finding the Fourth Proportional to 919,275.39, 1,378,922.82 and 279,683.25

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Solution

The fourth proportional to 919,275.39, 1,378,922.82 and 279,683.25 is: 419,527.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,275.39 : 1,378,922.82 = 279,683.25 : x
  2. Step 2: Convert to fraction form
    919,275.39/1,378,922.82 = 279,683.25/x
  3. Step 3: Cross multiply
    919,275.39x = 1,378,922.82 × 279,683.25
  4. Step 4: Simplify right side
    919,275.39x = 385,661,615,796.77
  5. Step 5: Solve for x
    x = 385,661,615,796.77/919,275.39
  6. Step 6: Final answer
    x = 419,527.84

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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.