Home / 12,484,490.58-18,726,648.36-6,420,912.78

Finding the Fourth Proportional to 12,484,490.58, 18,726,648.36 and 6,420,912.78

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Solution

The fourth proportional to 12,484,490.58, 18,726,648.36 and 6,420,912.78 is: 9,631,324.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,484,490.58 : 18,726,648.36 = 6,420,912.78 : x
  2. Step 2: Convert to fraction form
    12,484,490.58/18,726,648.36 = 6,420,912.78/x
  3. Step 3: Cross multiply
    12,484,490.58x = 18,726,648.36 × 6,420,912.78
  4. Step 4: Simplify right side
    12,484,490.58x = 120,242,175,781,290.05
  5. Step 5: Solve for x
    x = 120,242,175,781,290.05/12,484,490.58
  6. Step 6: Final answer
    x = 9,631,324.16

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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.