Home / 420,056.73-629,895.15-120,468.51

Finding the Fourth Proportional to 420,056.73, 629,895.15 and 120,468.51

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Solution

The fourth proportional to 420,056.73, 629,895.15 and 120,468.51 is: 180,648.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,056.73 : 629,895.15 = 120,468.51 : x
  2. Step 2: Convert to fraction form
    420,056.73/629,895.15 = 120,468.51/x
  3. Step 3: Cross multiply
    420,056.73x = 629,895.15 × 120,468.51
  4. Step 4: Simplify right side
    420,056.73x = 75,882,530,176.73
  5. Step 5: Solve for x
    x = 75,882,530,176.73/420,056.73
  6. Step 6: Final answer
    x = 180,648.29

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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.