Home / 402,407,998.20-603,611,997.30-208,697,753.70

Finding the Fourth Proportional to 402,407,998.20, 603,611,997.30 and 208,697,753.70

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Solution

The fourth proportional to 402,407,998.20, 603,611,997.30 and 208,697,753.70 is: 313,046,630.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,407,998.20 : 603,611,997.30 = 208,697,753.70 : x
  2. Step 2: Convert to fraction form
    402,407,998.20/603,611,997.30 = 208,697,753.70/x
  3. Step 3: Cross multiply
    402,407,998.20x = 603,611,997.30 × 208,697,753.70
  4. Step 4: Simplify right side
    402,407,998.20x = 125,972,467,942,880,448
  5. Step 5: Solve for x
    x = 125,972,467,942,880,448/402,407,998.20
  6. Step 6: Final answer
    x = 313,046,630.55

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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.