Home / 426,492,013.70-639,738,020.55-349,007,915.90

Finding the Fourth Proportional to 426,492,013.70, 639,738,020.55 and 349,007,915.90

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Solution

The fourth proportional to 426,492,013.70, 639,738,020.55 and 349,007,915.90 is: 523,511,873.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,492,013.70 : 639,738,020.55 = 349,007,915.90 : x
  2. Step 2: Convert to fraction form
    426,492,013.70/639,738,020.55 = 349,007,915.90/x
  3. Step 3: Cross multiply
    426,492,013.70x = 639,738,020.55 × 349,007,915.90
  4. Step 4: Simplify right side
    426,492,013.70x = 223,273,633,274,146,848
  5. Step 5: Solve for x
    x = 223,273,633,274,146,848/426,492,013.70
  6. Step 6: Final answer
    x = 523,511,873.85

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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.