Home / 485,418,469.26-728,645,861.70-209,205,997.14

Finding the Fourth Proportional to 485,418,469.26, 728,645,861.70 and 209,205,997.14

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Solution

The fourth proportional to 485,418,469.26, 728,645,861.70 and 209,205,997.14 is: 314,032,311.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,418,469.26 : 728,645,861.70 = 209,205,997.14 : x
  2. Step 2: Convert to fraction form
    485,418,469.26/728,645,861.70 = 209,205,997.14/x
  3. Step 3: Cross multiply
    485,418,469.26x = 728,645,861.70 × 209,205,997.14
  4. Step 4: Simplify right side
    485,418,469.26x = 152,437,084,058,883,040
  5. Step 5: Solve for x
    x = 152,437,084,058,883,040/485,418,469.26
  6. Step 6: Final answer
    x = 314,032,311.73

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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.