Home / 717,491,716.40-990,138,562.80-387,466,826.24

Finding the Fourth Proportional to 717,491,716.40, 990,138,562.80 and 387,466,826.24

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Solution

The fourth proportional to 717,491,716.40, 990,138,562.80 and 387,466,826.24 is: 534,704,217.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,491,716.40 : 990,138,562.80 = 387,466,826.24 : x
  2. Step 2: Convert to fraction form
    717,491,716.40/990,138,562.80 = 387,466,826.24/x
  3. Step 3: Cross multiply
    717,491,716.40x = 990,138,562.80 × 387,466,826.24
  4. Step 4: Simplify right side
    717,491,716.40x = 383,645,846,465,950,912
  5. Step 5: Solve for x
    x = 383,645,846,465,950,912/717,491,716.40
  6. Step 6: Final answer
    x = 534,704,217.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.