Home / 664,439,639.10-996,659,458.65-319,310,043.90

Finding the Fourth Proportional to 664,439,639.10, 996,659,458.65 and 319,310,043.90

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Solution

The fourth proportional to 664,439,639.10, 996,659,458.65 and 319,310,043.90 is: 478,965,065.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,439,639.10 : 996,659,458.65 = 319,310,043.90 : x
  2. Step 2: Convert to fraction form
    664,439,639.10/996,659,458.65 = 319,310,043.90/x
  3. Step 3: Cross multiply
    664,439,639.10x = 996,659,458.65 × 319,310,043.90
  4. Step 4: Simplify right side
    664,439,639.10x = 318,243,375,494,881,728
  5. Step 5: Solve for x
    x = 318,243,375,494,881,728/664,439,639.10
  6. Step 6: Final answer
    x = 478,965,065.85

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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.