Home / 512,815,139.70-769,222,709.55-461,754,813.30

Finding the Fourth Proportional to 512,815,139.70, 769,222,709.55 and 461,754,813.30

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Solution

The fourth proportional to 512,815,139.70, 769,222,709.55 and 461,754,813.30 is: 692,632,219.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,815,139.70 : 769,222,709.55 = 461,754,813.30 : x
  2. Step 2: Convert to fraction form
    512,815,139.70/769,222,709.55 = 461,754,813.30/x
  3. Step 3: Cross multiply
    512,815,139.70x = 769,222,709.55 × 461,754,813.30
  4. Step 4: Simplify right side
    512,815,139.70x = 355,192,288,634,380,352
  5. Step 5: Solve for x
    x = 355,192,288,634,380,352/512,815,139.70
  6. Step 6: Final answer
    x = 692,632,219.95

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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.