Home / 643,836,650.40-965,825,834.40-207,063,007.20

Finding the Fourth Proportional to 643,836,650.40, 965,825,834.40 and 207,063,007.20

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Solution

The fourth proportional to 643,836,650.40, 965,825,834.40 and 207,063,007.20 is: 310,617,299.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,836,650.40 : 965,825,834.40 = 207,063,007.20 : x
  2. Step 2: Convert to fraction form
    643,836,650.40/965,825,834.40 = 207,063,007.20/x
  3. Step 3: Cross multiply
    643,836,650.40x = 965,825,834.40 × 207,063,007.20
  4. Step 4: Simplify right side
    643,836,650.40x = 199,986,801,702,313,184
  5. Step 5: Solve for x
    x = 199,986,801,702,313,184/643,836,650.40
  6. Step 6: Final answer
    x = 310,617,299.56

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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.