Home / 425,981,570.20-638,972,355.30-380,065,067.80

Finding the Fourth Proportional to 425,981,570.20, 638,972,355.30 and 380,065,067.80

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Solution

The fourth proportional to 425,981,570.20, 638,972,355.30 and 380,065,067.80 is: 570,097,601.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,981,570.20 : 638,972,355.30 = 380,065,067.80 : x
  2. Step 2: Convert to fraction form
    425,981,570.20/638,972,355.30 = 380,065,067.80/x
  3. Step 3: Cross multiply
    425,981,570.20x = 638,972,355.30 × 380,065,067.80
  4. Step 4: Simplify right side
    425,981,570.20x = 242,851,071,539,420,192
  5. Step 5: Solve for x
    x = 242,851,071,539,420,192/425,981,570.20
  6. Step 6: Final answer
    x = 570,097,601.70

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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.