Home / 639,136,000.26-881,998,970.85-356,882,800.86

Finding the Fourth Proportional to 639,136,000.26, 881,998,970.85 and 356,882,800.86

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Solution

The fourth proportional to 639,136,000.26, 881,998,970.85 and 356,882,800.86 is: 492,493,401.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,136,000.26 : 881,998,970.85 = 356,882,800.86 : x
  2. Step 2: Convert to fraction form
    639,136,000.26/881,998,970.85 = 356,882,800.86/x
  3. Step 3: Cross multiply
    639,136,000.26x = 881,998,970.85 × 356,882,800.86
  4. Step 4: Simplify right side
    639,136,000.26x = 314,770,263,072,585,536
  5. Step 5: Solve for x
    x = 314,770,263,072,585,536/639,136,000.26
  6. Step 6: Final answer
    x = 492,493,401.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.