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Finding the Fourth Proportional to 449,991, 674,653.32 and 272,456.28

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Solution

The fourth proportional to 449,991, 674,653.32 and 272,456.28 is: 408,482.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,991 : 674,653.32 = 272,456.28 : x
  2. Step 2: Convert to fraction form
    449,991/674,653.32 = 272,456.28/x
  3. Step 3: Cross multiply
    449,991x = 674,653.32 × 272,456.28
  4. Step 4: Simplify right side
    449,991x = 183,813,533,856.85
  5. Step 5: Solve for x
    x = 183,813,533,856.85/449,991
  6. Step 6: Final answer
    x = 408,482.69

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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.