Home / 393,669,815.70-590,504,723.55-212,271,287.70

Finding the Fourth Proportional to 393,669,815.70, 590,504,723.55 and 212,271,287.70

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Solution

The fourth proportional to 393,669,815.70, 590,504,723.55 and 212,271,287.70 is: 318,406,931.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,669,815.70 : 590,504,723.55 = 212,271,287.70 : x
  2. Step 2: Convert to fraction form
    393,669,815.70/590,504,723.55 = 212,271,287.70/x
  3. Step 3: Cross multiply
    393,669,815.70x = 590,504,723.55 × 212,271,287.70
  4. Step 4: Simplify right side
    393,669,815.70x = 125,347,198,060,890,992
  5. Step 5: Solve for x
    x = 125,347,198,060,890,992/393,669,815.70
  6. Step 6: Final answer
    x = 318,406,931.55

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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.