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Finding the Fourth Proportional to 529,346.72, 794,022.74 and 129,987.60

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Solution

The fourth proportional to 529,346.72, 794,022.74 and 129,987.60 is: 194,982.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,346.72 : 794,022.74 = 129,987.60 : x
  2. Step 2: Convert to fraction form
    529,346.72/794,022.74 = 129,987.60/x
  3. Step 3: Cross multiply
    529,346.72x = 794,022.74 × 129,987.60
  4. Step 4: Simplify right side
    529,346.72x = 103,213,110,318.02
  5. Step 5: Solve for x
    x = 103,213,110,318.02/529,346.72
  6. Step 6: Final answer
    x = 194,982.05

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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.