Home / 839,808,685.70-1,259,713,028.55-768,383,015.30

Finding the Fourth Proportional to 839,808,685.70, 1,259,713,028.55 and 768,383,015.30

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Solution

The fourth proportional to 839,808,685.70, 1,259,713,028.55 and 768,383,015.30 is: 1,152,574,522.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,808,685.70 : 1,259,713,028.55 = 768,383,015.30 : x
  2. Step 2: Convert to fraction form
    839,808,685.70/1,259,713,028.55 = 768,383,015.30/x
  3. Step 3: Cross multiply
    839,808,685.70x = 1,259,713,028.55 × 768,383,015.30
  4. Step 4: Simplify right side
    839,808,685.70x = 967,942,095,289,943,936
  5. Step 5: Solve for x
    x = 967,942,095,289,943,936/839,808,685.70
  6. Step 6: Final answer
    x = 1,152,574,522.95

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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.