Home / 520,399,986-780,616,153.08-192,956,980.56

Finding the Fourth Proportional to 520,399,986, 780,616,153.08 and 192,956,980.56

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Solution

The fourth proportional to 520,399,986, 780,616,153.08 and 192,956,980.56 is: 289,441,467.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,399,986 : 780,616,153.08 = 192,956,980.56 : x
  2. Step 2: Convert to fraction form
    520,399,986/780,616,153.08 = 192,956,980.56/x
  3. Step 3: Cross multiply
    520,399,986x = 780,616,153.08 × 192,956,980.56
  4. Step 4: Simplify right side
    520,399,986x = 150,625,335,874,679,552
  5. Step 5: Solve for x
    x = 150,625,335,874,679,552/520,399,986
  6. Step 6: Final answer
    x = 289,441,467.96

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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.