Home / 839,811,219.20-1,259,716,828.80-513,293,868.80

Finding the Fourth Proportional to 839,811,219.20, 1,259,716,828.80 and 513,293,868.80

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Solution

The fourth proportional to 839,811,219.20, 1,259,716,828.80 and 513,293,868.80 is: 769,940,803.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,811,219.20 : 1,259,716,828.80 = 513,293,868.80 : x
  2. Step 2: Convert to fraction form
    839,811,219.20/1,259,716,828.80 = 513,293,868.80/x
  3. Step 3: Cross multiply
    839,811,219.20x = 1,259,716,828.80 × 513,293,868.80
  4. Step 4: Simplify right side
    839,811,219.20x = 646,604,924,647,219,200
  5. Step 5: Solve for x
    x = 646,604,924,647,219,200/839,811,219.20
  6. Step 6: Final answer
    x = 769,940,803.20

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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.