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Finding the Fourth Proportional to 497,793.60, 746,690.40 and 320,500.80

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Solution

The fourth proportional to 497,793.60, 746,690.40 and 320,500.80 is: 480,751.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,793.60 : 746,690.40 = 320,500.80 : x
  2. Step 2: Convert to fraction form
    497,793.60/746,690.40 = 320,500.80/x
  3. Step 3: Cross multiply
    497,793.60x = 746,690.40 × 320,500.80
  4. Step 4: Simplify right side
    497,793.60x = 239,314,870,552.32
  5. Step 5: Solve for x
    x = 239,314,870,552.32/497,793.60
  6. Step 6: Final answer
    x = 480,751.20

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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.