Home / 386,587,905.16-533,491,396.26-212,747,649.16

Finding the Fourth Proportional to 386,587,905.16, 533,491,396.26 and 212,747,649.16

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Solution

The fourth proportional to 386,587,905.16, 533,491,396.26 and 212,747,649.16 is: 293,591,803.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,587,905.16 : 533,491,396.26 = 212,747,649.16 : x
  2. Step 2: Convert to fraction form
    386,587,905.16/533,491,396.26 = 212,747,649.16/x
  3. Step 3: Cross multiply
    386,587,905.16x = 533,491,396.26 × 212,747,649.16
  4. Step 4: Simplify right side
    386,587,905.16x = 113,499,040,401,401,008
  5. Step 5: Solve for x
    x = 113,499,040,401,401,008/386,587,905.16
  6. Step 6: Final answer
    x = 293,591,803.80

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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.