Home / 419,531,727.72-578,770,117.98-400,080,987

Finding the Fourth Proportional to 419,531,727.72, 578,770,117.98 and 400,080,987

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Solution

The fourth proportional to 419,531,727.72, 578,770,117.98 and 400,080,987 is: 551,936,611.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,531,727.72 : 578,770,117.98 = 400,080,987 : x
  2. Step 2: Convert to fraction form
    419,531,727.72/578,770,117.98 = 400,080,987/x
  3. Step 3: Cross multiply
    419,531,727.72x = 578,770,117.98 × 400,080,987
  4. Step 4: Simplify right side
    419,531,727.72x = 231,554,920,047,544,864
  5. Step 5: Solve for x
    x = 231,554,920,047,544,864/419,531,727.72
  6. Step 6: Final answer
    x = 551,936,611.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.