Home / 419,908,082.10-629,862,123.15-258,440,997.30

Finding the Fourth Proportional to 419,908,082.10, 629,862,123.15 and 258,440,997.30

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Solution

The fourth proportional to 419,908,082.10, 629,862,123.15 and 258,440,997.30 is: 387,661,495.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,908,082.10 : 629,862,123.15 = 258,440,997.30 : x
  2. Step 2: Convert to fraction form
    419,908,082.10/629,862,123.15 = 258,440,997.30/x
  3. Step 3: Cross multiply
    419,908,082.10x = 629,862,123.15 × 258,440,997.30
  4. Step 4: Simplify right side
    419,908,082.10x = 162,782,195,268,381,408
  5. Step 5: Solve for x
    x = 162,782,195,268,381,408/419,908,082.10
  6. Step 6: Final answer
    x = 387,661,495.95

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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.