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Finding the Fourth Proportional to 505,974.48, 698,238.36 and 279,615.12

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Solution

The fourth proportional to 505,974.48, 698,238.36 and 279,615.12 is: 385,865.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,974.48 : 698,238.36 = 279,615.12 : x
  2. Step 2: Convert to fraction form
    505,974.48/698,238.36 = 279,615.12/x
  3. Step 3: Cross multiply
    505,974.48x = 698,238.36 × 279,615.12
  4. Step 4: Simplify right side
    505,974.48x = 195,238,002,820.00
  5. Step 5: Solve for x
    x = 195,238,002,820.00/505,974.48
  6. Step 6: Final answer
    x = 385,865.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.