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Finding the Fourth Proportional to 505,670.50, 697,825.38 and 279,330.58

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Solution

The fourth proportional to 505,670.50, 697,825.38 and 279,330.58 is: 385,476.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,670.50 : 697,825.38 = 279,330.58 : x
  2. Step 2: Convert to fraction form
    505,670.50/697,825.38 = 279,330.58/x
  3. Step 3: Cross multiply
    505,670.50x = 697,825.38 × 279,330.58
  4. Step 4: Simplify right side
    505,670.50x = 194,923,968,134.12
  5. Step 5: Solve for x
    x = 194,923,968,134.12/505,670.50
  6. Step 6: Final answer
    x = 385,476.25

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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.