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Finding the Fourth Proportional to 506,514.60, 759,771.90 and 388,416.60

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Solution

The fourth proportional to 506,514.60, 759,771.90 and 388,416.60 is: 582,624.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,514.60 : 759,771.90 = 388,416.60 : x
  2. Step 2: Convert to fraction form
    506,514.60/759,771.90 = 388,416.60/x
  3. Step 3: Cross multiply
    506,514.60x = 759,771.90 × 388,416.60
  4. Step 4: Simplify right side
    506,514.60x = 295,108,018,173.54
  5. Step 5: Solve for x
    x = 295,108,018,173.54/506,514.60
  6. Step 6: Final answer
    x = 582,624.90

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Double scale
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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.