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Finding the Fourth Proportional to 508,629.60, 763,138.80 and 500,659.20

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Solution

The fourth proportional to 508,629.60, 763,138.80 and 500,659.20 is: 751,180.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,629.60 : 763,138.80 = 500,659.20 : x
  2. Step 2: Convert to fraction form
    508,629.60/763,138.80 = 500,659.20/x
  3. Step 3: Cross multiply
    508,629.60x = 763,138.80 × 500,659.20
  4. Step 4: Simplify right side
    508,629.60x = 382,072,461,096.96
  5. Step 5: Solve for x
    x = 382,072,461,096.96/508,629.60
  6. Step 6: Final answer
    x = 751,180.15

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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.