Home / 839,811,211.20-1,259,716,816.80-513,293,860.80

Finding the Fourth Proportional to 839,811,211.20, 1,259,716,816.80 and 513,293,860.80

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Solution

The fourth proportional to 839,811,211.20, 1,259,716,816.80 and 513,293,860.80 is: 769,940,791.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,811,211.20 : 1,259,716,816.80 = 513,293,860.80 : x
  2. Step 2: Convert to fraction form
    839,811,211.20/1,259,716,816.80 = 513,293,860.80/x
  3. Step 3: Cross multiply
    839,811,211.20x = 1,259,716,816.80 × 513,293,860.80
  4. Step 4: Simplify right side
    839,811,211.20x = 646,604,908,409,958,272
  5. Step 5: Solve for x
    x = 646,604,908,409,958,272/839,811,211.20
  6. Step 6: Final answer
    x = 769,940,791.20

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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.