Home / 540,918,003.42-811,108,331.87-172,405,004.22

Finding the Fourth Proportional to 540,918,003.42, 811,108,331.87 and 172,405,004.22

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Solution

The fourth proportional to 540,918,003.42, 811,108,331.87 and 172,405,004.22 is: 258,521,872.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,918,003.42 : 811,108,331.87 = 172,405,004.22 : x
  2. Step 2: Convert to fraction form
    540,918,003.42/811,108,331.87 = 172,405,004.22/x
  3. Step 3: Cross multiply
    540,918,003.42x = 811,108,331.87 × 172,405,004.22
  4. Step 4: Simplify right side
    540,918,003.42x = 139,839,135,378,062,480
  5. Step 5: Solve for x
    x = 139,839,135,378,062,480/540,918,003.42
  6. Step 6: Final answer
    x = 258,521,872.99

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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.