Home / 520,399,988-780,616,156.08-192,956,982.56

Finding the Fourth Proportional to 520,399,988, 780,616,156.08 and 192,956,982.56

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Solution

The fourth proportional to 520,399,988, 780,616,156.08 and 192,956,982.56 is: 289,441,470.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,399,988 : 780,616,156.08 = 192,956,982.56 : x
  2. Step 2: Convert to fraction form
    520,399,988/780,616,156.08 = 192,956,982.56/x
  3. Step 3: Cross multiply
    520,399,988x = 780,616,156.08 × 192,956,982.56
  4. Step 4: Simplify right side
    520,399,988x = 150,625,338,014,782,816
  5. Step 5: Solve for x
    x = 150,625,338,014,782,816/520,399,988
  6. Step 6: Final answer
    x = 289,441,470.96

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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.