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Finding the Fourth Proportional to 426,492,065.70, 639,738,098.55 and 349,007,967.90

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Solution

The fourth proportional to 426,492,065.70, 639,738,098.55 and 349,007,967.90 is: 523,511,951.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,492,065.70 : 639,738,098.55 = 349,007,967.90 : x
  2. Step 2: Convert to fraction form
    426,492,065.70/639,738,098.55 = 349,007,967.90/x
  3. Step 3: Cross multiply
    426,492,065.70x = 639,738,098.55 × 349,007,967.90
  4. Step 4: Simplify right side
    426,492,065.70x = 223,273,693,763,145,408
  5. Step 5: Solve for x
    x = 223,273,693,763,145,408/426,492,065.70
  6. Step 6: Final answer
    x = 523,511,951.85

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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.