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Finding the Fourth Proportional to 497,785.60, 746,678.40 and 320,492.80

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Solution

The fourth proportional to 497,785.60, 746,678.40 and 320,492.80 is: 480,739.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,785.60 : 746,678.40 = 320,492.80 : x
  2. Step 2: Convert to fraction form
    497,785.60/746,678.40 = 320,492.80/x
  3. Step 3: Cross multiply
    497,785.60x = 746,678.40 × 320,492.80
  4. Step 4: Simplify right side
    497,785.60x = 239,305,051,115.52
  5. Step 5: Solve for x
    x = 239,305,051,115.52/497,785.60
  6. Step 6: Final answer
    x = 480,739.20

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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.