Home / 520,509,427.02-780,765,965.52-132,332,299.20

Finding the Fourth Proportional to 520,509,427.02, 780,765,965.52 and 132,332,299.20

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Solution

The fourth proportional to 520,509,427.02, 780,765,965.52 and 132,332,299.20 is: 198,498,912.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,509,427.02 : 780,765,965.52 = 132,332,299.20 : x
  2. Step 2: Convert to fraction form
    520,509,427.02/780,765,965.52 = 132,332,299.20/x
  3. Step 3: Cross multiply
    520,509,427.02x = 780,765,965.52 × 132,332,299.20
  4. Step 4: Simplify right side
    520,509,427.02x = 103,320,555,354,369,520
  5. Step 5: Solve for x
    x = 103,320,555,354,369,520/520,509,427.02
  6. Step 6: Final answer
    x = 198,498,912.78

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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.