Home / 664,288,811.10-996,433,216.65-387,656,055.90

Finding the Fourth Proportional to 664,288,811.10, 996,433,216.65 and 387,656,055.90

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Solution

The fourth proportional to 664,288,811.10, 996,433,216.65 and 387,656,055.90 is: 581,484,083.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,288,811.10 : 996,433,216.65 = 387,656,055.90 : x
  2. Step 2: Convert to fraction form
    664,288,811.10/996,433,216.65 = 387,656,055.90/x
  3. Step 3: Cross multiply
    664,288,811.10x = 996,433,216.65 × 387,656,055.90
  4. Step 4: Simplify right side
    664,288,811.10x = 386,273,370,734,289,152
  5. Step 5: Solve for x
    x = 386,273,370,734,289,152/664,288,811.10
  6. Step 6: Final answer
    x = 581,484,083.85

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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.