Home / 260,802,415.80-391,203,623.70-256,976,040.60

Finding the Fourth Proportional to 260,802,415.80, 391,203,623.70 and 256,976,040.60

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Solution

The fourth proportional to 260,802,415.80, 391,203,623.70 and 256,976,040.60 is: 385,464,060.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,802,415.80 : 391,203,623.70 = 256,976,040.60 : x
  2. Step 2: Convert to fraction form
    260,802,415.80/391,203,623.70 = 256,976,040.60/x
  3. Step 3: Cross multiply
    260,802,415.80x = 391,203,623.70 × 256,976,040.60
  4. Step 4: Simplify right side
    260,802,415.80x = 100,529,958,286,798,320
  5. Step 5: Solve for x
    x = 100,529,958,286,798,320/260,802,415.80
  6. Step 6: Final answer
    x = 385,464,060.90

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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.