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Finding the Fourth Proportional to 449,491.10, 620,316.57 and 258,504.64

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Solution

The fourth proportional to 449,491.10, 620,316.57 and 258,504.64 is: 356,747.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,491.10 : 620,316.57 = 258,504.64 : x
  2. Step 2: Convert to fraction form
    449,491.10/620,316.57 = 258,504.64/x
  3. Step 3: Cross multiply
    449,491.10x = 620,316.57 × 258,504.64
  4. Step 4: Simplify right side
    449,491.10x = 160,354,709,093.70
  5. Step 5: Solve for x
    x = 160,354,709,093.70/449,491.10
  6. Step 6: Final answer
    x = 356,747.24

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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.