Home / 425,738,999.70-638,608,499.55-379,822,497.30

Finding the Fourth Proportional to 425,738,999.70, 638,608,499.55 and 379,822,497.30

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Solution

The fourth proportional to 425,738,999.70, 638,608,499.55 and 379,822,497.30 is: 569,733,745.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,738,999.70 : 638,608,499.55 = 379,822,497.30 : x
  2. Step 2: Convert to fraction form
    425,738,999.70/638,608,499.55 = 379,822,497.30/x
  3. Step 3: Cross multiply
    425,738,999.70x = 638,608,499.55 × 379,822,497.30
  4. Step 4: Simplify right side
    425,738,999.70x = 242,557,875,096,086,912
  5. Step 5: Solve for x
    x = 242,557,875,096,086,912/425,738,999.70
  6. Step 6: Final answer
    x = 569,733,745.95

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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.