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Finding the Fourth Proportional to 606,311,999.70, 909,467,999.55 and 330,812,985.30

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Solution

The fourth proportional to 606,311,999.70, 909,467,999.55 and 330,812,985.30 is: 496,219,477.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,311,999.70 : 909,467,999.55 = 330,812,985.30 : x
  2. Step 2: Convert to fraction form
    606,311,999.70/909,467,999.55 = 330,812,985.30/x
  3. Step 3: Cross multiply
    606,311,999.70x = 909,467,999.55 × 330,812,985.30
  4. Step 4: Simplify right side
    606,311,999.70x = 300,863,823,965,954,560
  5. Step 5: Solve for x
    x = 300,863,823,965,954,560/606,311,999.70
  6. Step 6: Final answer
    x = 496,219,477.95

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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.