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Finding the Fourth Proportional to 497,728.60, 746,592.90 and 320,435.80

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Solution

The fourth proportional to 497,728.60, 746,592.90 and 320,435.80 is: 480,653.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,728.60 : 746,592.90 = 320,435.80 : x
  2. Step 2: Convert to fraction form
    497,728.60/746,592.90 = 320,435.80/x
  3. Step 3: Cross multiply
    497,728.60x = 746,592.90 × 320,435.80
  4. Step 4: Simplify right side
    497,728.60x = 239,235,093,185.82
  5. Step 5: Solve for x
    x = 239,235,093,185.82/497,728.60
  6. Step 6: Final answer
    x = 480,653.70

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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.