Home / 919,074.30-1,378,611.45-279,376.80

Finding the Fourth Proportional to 919,074.30, 1,378,611.45 and 279,376.80

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Solution

The fourth proportional to 919,074.30, 1,378,611.45 and 279,376.80 is: 419,065.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,074.30 : 1,378,611.45 = 279,376.80 : x
  2. Step 2: Convert to fraction form
    919,074.30/1,378,611.45 = 279,376.80/x
  3. Step 3: Cross multiply
    919,074.30x = 1,378,611.45 × 279,376.80
  4. Step 4: Simplify right side
    919,074.30x = 385,152,055,344.36
  5. Step 5: Solve for x
    x = 385,152,055,344.36/919,074.30
  6. Step 6: Final answer
    x = 419,065.20

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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.