Home / 419,531,726.72-578,770,116.60-400,080,986

Finding the Fourth Proportional to 419,531,726.72, 578,770,116.60 and 400,080,986

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Solution

The fourth proportional to 419,531,726.72, 578,770,116.60 and 400,080,986 is: 551,936,609.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,531,726.72 : 578,770,116.60 = 400,080,986 : x
  2. Step 2: Convert to fraction form
    419,531,726.72/578,770,116.60 = 400,080,986/x
  3. Step 3: Cross multiply
    419,531,726.72x = 578,770,116.60 × 400,080,986
  4. Step 4: Simplify right side
    419,531,726.72x = 231,554,918,916,662,976
  5. Step 5: Solve for x
    x = 231,554,918,916,662,976/419,531,726.72
  6. Step 6: Final answer
    x = 551,936,609.72

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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.