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Finding the Fourth Proportional to 505,690.02, 697,850.10 and 279,335.52

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Solution

The fourth proportional to 505,690.02, 697,850.10 and 279,335.52 is: 385,481.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,690.02 : 697,850.10 = 279,335.52 : x
  2. Step 2: Convert to fraction form
    505,690.02/697,850.10 = 279,335.52/x
  3. Step 3: Cross multiply
    505,690.02x = 697,850.10 × 279,335.52
  4. Step 4: Simplify right side
    505,690.02x = 194,934,320,565.55
  5. Step 5: Solve for x
    x = 194,934,320,565.55/505,690.02
  6. Step 6: Final answer
    x = 385,481.84

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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.