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Finding the Fourth Proportional to 481,457.90, 721,780.44 and 303,572.78

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Solution

The fourth proportional to 481,457.90, 721,780.44 and 303,572.78 is: 455,102.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,457.90 : 721,780.44 = 303,572.78 : x
  2. Step 2: Convert to fraction form
    481,457.90/721,780.44 = 303,572.78/x
  3. Step 3: Cross multiply
    481,457.90x = 721,780.44 × 303,572.78
  4. Step 4: Simplify right side
    481,457.90x = 219,112,894,720.42
  5. Step 5: Solve for x
    x = 219,112,894,720.42/481,457.90
  6. Step 6: Final answer
    x = 455,102.92

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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.