Home / 839,808,815.70-1,259,713,223.55-768,383,145.30

Finding the Fourth Proportional to 839,808,815.70, 1,259,713,223.55 and 768,383,145.30

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Solution

The fourth proportional to 839,808,815.70, 1,259,713,223.55 and 768,383,145.30 is: 1,152,574,717.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,808,815.70 : 1,259,713,223.55 = 768,383,145.30 : x
  2. Step 2: Convert to fraction form
    839,808,815.70/1,259,713,223.55 = 768,383,145.30/x
  3. Step 3: Cross multiply
    839,808,815.70x = 1,259,713,223.55 × 768,383,145.30
  4. Step 4: Simplify right side
    839,808,815.70x = 967,942,408,887,350,912
  5. Step 5: Solve for x
    x = 967,942,408,887,350,912/839,808,815.70
  6. Step 6: Final answer
    x = 1,152,574,717.95

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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.