Home / 393,455,486.40-590,561,143.20-199,585,809.60

Finding the Fourth Proportional to 393,455,486.40, 590,561,143.20 and 199,585,809.60

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Solution

The fourth proportional to 393,455,486.40, 590,561,143.20 and 199,585,809.60 is: 299,570,416.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,455,486.40 : 590,561,143.20 = 199,585,809.60 : x
  2. Step 2: Convert to fraction form
    393,455,486.40/590,561,143.20 = 199,585,809.60/x
  3. Step 3: Cross multiply
    393,455,486.40x = 590,561,143.20 × 199,585,809.60
  4. Step 4: Simplify right side
    393,455,486.40x = 117,867,623,883,873,536
  5. Step 5: Solve for x
    x = 117,867,623,883,873,536/393,455,486.40
  6. Step 6: Final answer
    x = 299,570,416.37

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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.