Home / 520,158,736.80-780,236,550-131,980,816.80

Finding the Fourth Proportional to 520,158,736.80, 780,236,550 and 131,980,816.80

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Solution

The fourth proportional to 520,158,736.80, 780,236,550 and 131,980,816.80 is: 197,970,830.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,158,736.80 : 780,236,550 = 131,980,816.80 : x
  2. Step 2: Convert to fraction form
    520,158,736.80/780,236,550 = 131,980,816.80/x
  3. Step 3: Cross multiply
    520,158,736.80x = 780,236,550 × 131,980,816.80
  4. Step 4: Simplify right side
    520,158,736.80x = 102,976,257,166,214,032
  5. Step 5: Solve for x
    x = 102,976,257,166,214,032/520,158,736.80
  6. Step 6: Final answer
    x = 197,970,830.60

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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.