Home / 440,909,744.36-661,378,940.72-129,991,287.56

Finding the Fourth Proportional to 440,909,744.36, 661,378,940.72 and 129,991,287.56

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Solution

The fourth proportional to 440,909,744.36, 661,378,940.72 and 129,991,287.56 is: 194,991,154.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,909,744.36 : 661,378,940.72 = 129,991,287.56 : x
  2. Step 2: Convert to fraction form
    440,909,744.36/661,378,940.72 = 129,991,287.56/x
  3. Step 3: Cross multiply
    440,909,744.36x = 661,378,940.72 × 129,991,287.56
  4. Step 4: Simplify right side
    440,909,744.36x = 85,973,500,065,304,864
  5. Step 5: Solve for x
    x = 85,973,500,065,304,864/440,909,744.36
  6. Step 6: Final answer
    x = 194,991,154.46

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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.