Home / 664,439,718.60-996,659,577.90-319,310,123.40

Finding the Fourth Proportional to 664,439,718.60, 996,659,577.90 and 319,310,123.40

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Solution

The fourth proportional to 664,439,718.60, 996,659,577.90 and 319,310,123.40 is: 478,965,185.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,439,718.60 : 996,659,577.90 = 319,310,123.40 : x
  2. Step 2: Convert to fraction form
    664,439,718.60/996,659,577.90 = 319,310,123.40/x
  3. Step 3: Cross multiply
    664,439,718.60x = 996,659,577.90 × 319,310,123.40
  4. Step 4: Simplify right side
    664,439,718.60x = 318,243,492,807,040,896
  5. Step 5: Solve for x
    x = 318,243,492,807,040,896/664,439,718.60
  6. Step 6: Final answer
    x = 478,965,185.10

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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.