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Finding the Fourth Proportional to 449,085.60, 673,628.40 and 431,370.90

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Solution

The fourth proportional to 449,085.60, 673,628.40 and 431,370.90 is: 647,056.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,085.60 : 673,628.40 = 431,370.90 : x
  2. Step 2: Convert to fraction form
    449,085.60/673,628.40 = 431,370.90/x
  3. Step 3: Cross multiply
    449,085.60x = 673,628.40 × 431,370.90
  4. Step 4: Simplify right side
    449,085.60x = 290,583,689,173.56
  5. Step 5: Solve for x
    x = 290,583,689,173.56/449,085.60
  6. Step 6: Final answer
    x = 647,056.35

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Similar ratio
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1.5x scale

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.