Home / 393,709,101.60-590,421,934.80-199,555,989.60

Finding the Fourth Proportional to 393,709,101.60, 590,421,934.80 and 199,555,989.60

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Solution

The fourth proportional to 393,709,101.60, 590,421,934.80 and 199,555,989.60 is: 299,262,153.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,709,101.60 : 590,421,934.80 = 199,555,989.60 : x
  2. Step 2: Convert to fraction form
    393,709,101.60/590,421,934.80 = 199,555,989.60/x
  3. Step 3: Cross multiply
    393,709,101.60x = 590,421,934.80 × 199,555,989.60
  4. Step 4: Simplify right side
    393,709,101.60x = 117,822,233,480,560,672
  5. Step 5: Solve for x
    x = 117,822,233,480,560,672/393,709,101.60
  6. Step 6: Final answer
    x = 299,262,153.20

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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.