Home / 485,416,541.21-728,642,966.33-209,204,067.27

Finding the Fourth Proportional to 485,416,541.21, 728,642,966.33 and 209,204,067.27

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Solution

The fourth proportional to 485,416,541.21, 728,642,966.33 and 209,204,067.27 is: 314,029,414.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,416,541.21 : 728,642,966.33 = 209,204,067.27 : x
  2. Step 2: Convert to fraction form
    485,416,541.21/728,642,966.33 = 209,204,067.27/x
  3. Step 3: Cross multiply
    485,416,541.21x = 728,642,966.33 × 209,204,067.27
  4. Step 4: Simplify right side
    485,416,541.21x = 152,435,072,143,913,696
  5. Step 5: Solve for x
    x = 152,435,072,143,913,696/485,416,541.21
  6. Step 6: Final answer
    x = 314,029,414.33

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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.