Home / 393,543,981.20-590,672,890.20-199,590,323.60

Finding the Fourth Proportional to 393,543,981.20, 590,672,890.20 and 199,590,323.60

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Solution

The fourth proportional to 393,543,981.20, 590,672,890.20 and 199,590,323.60 is: 299,566,500.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,543,981.20 : 590,672,890.20 = 199,590,323.60 : x
  2. Step 2: Convert to fraction form
    393,543,981.20/590,672,890.20 = 199,590,323.60/x
  3. Step 3: Cross multiply
    393,543,981.20x = 590,672,890.20 × 199,590,323.60
  4. Step 4: Simplify right side
    393,543,981.20x = 117,892,593,296,765,280
  5. Step 5: Solve for x
    x = 117,892,593,296,765,280/393,543,981.20
  6. Step 6: Final answer
    x = 299,566,500.64

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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.