Home / 393,664,000.20-590,496,000.30-209,997,990.60

Finding the Fourth Proportional to 393,664,000.20, 590,496,000.30 and 209,997,990.60

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Solution

The fourth proportional to 393,664,000.20, 590,496,000.30 and 209,997,990.60 is: 314,996,985.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,664,000.20 : 590,496,000.30 = 209,997,990.60 : x
  2. Step 2: Convert to fraction form
    393,664,000.20/590,496,000.30 = 209,997,990.60/x
  3. Step 3: Cross multiply
    393,664,000.20x = 590,496,000.30 × 209,997,990.60
  4. Step 4: Simplify right side
    393,664,000.20x = 124,002,973,520,336,976
  5. Step 5: Solve for x
    x = 124,002,973,520,336,976/393,664,000.20
  6. Step 6: Final answer
    x = 314,996,985.90

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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.