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Finding the Fourth Proportional to 399,789.56, 599,684.28 and 104,301.56

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Solution

The fourth proportional to 399,789.56, 599,684.28 and 104,301.56 is: 156,452.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,789.56 : 599,684.28 = 104,301.56 : x
  2. Step 2: Convert to fraction form
    399,789.56/599,684.28 = 104,301.56/x
  3. Step 3: Cross multiply
    399,789.56x = 599,684.28 × 104,301.56
  4. Step 4: Simplify right side
    399,789.56x = 62,548,005,911.48
  5. Step 5: Solve for x
    x = 62,548,005,911.48/399,789.56
  6. Step 6: Final answer
    x = 156,452.32

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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.