Home / 419,904,739.40-629,857,109.10-204,913,891.40

Finding the Fourth Proportional to 419,904,739.40, 629,857,109.10 and 204,913,891.40

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Solution

The fourth proportional to 419,904,739.40, 629,857,109.10 and 204,913,891.40 is: 307,370,837.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,739.40 : 629,857,109.10 = 204,913,891.40 : x
  2. Step 2: Convert to fraction form
    419,904,739.40/629,857,109.10 = 204,913,891.40/x
  3. Step 3: Cross multiply
    419,904,739.40x = 629,857,109.10 × 204,913,891.40
  4. Step 4: Simplify right side
    419,904,739.40x = 129,066,471,251,635,360
  5. Step 5: Solve for x
    x = 129,066,471,251,635,360/419,904,739.40
  6. Step 6: Final answer
    x = 307,370,837.10

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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.