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Finding the Fourth Proportional to 449,491.45, 620,317.06 and 258,505

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Solution

The fourth proportional to 449,491.45, 620,317.06 and 258,505 is: 356,747.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,491.45 : 620,317.06 = 258,505 : x
  2. Step 2: Convert to fraction form
    449,491.45/620,317.06 = 258,505/x
  3. Step 3: Cross multiply
    449,491.45x = 620,317.06 × 258,505
  4. Step 4: Simplify right side
    449,491.45x = 160,355,061,595.30
  5. Step 5: Solve for x
    x = 160,355,061,595.30/449,491.45
  6. Step 6: Final answer
    x = 356,747.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.