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Finding the Fourth Proportional to 508,015.20, 761,245.20 and 480,021.60

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Solution

The fourth proportional to 508,015.20, 761,245.20 and 480,021.60 is: 719,297.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,015.20 : 761,245.20 = 480,021.60 : x
  2. Step 2: Convert to fraction form
    508,015.20/761,245.20 = 480,021.60/x
  3. Step 3: Cross multiply
    508,015.20x = 761,245.20 × 480,021.60
  4. Step 4: Simplify right side
    508,015.20x = 365,414,138,896.32
  5. Step 5: Solve for x
    x = 365,414,138,896.32/508,015.20
  6. Step 6: Final answer
    x = 719,297.65

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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.