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Finding the Fourth Proportional to 505,676.52, 697,831.47 and 279,322.02

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Solution

The fourth proportional to 505,676.52, 697,831.47 and 279,322.02 is: 385,463.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,676.52 : 697,831.47 = 279,322.02 : x
  2. Step 2: Convert to fraction form
    505,676.52/697,831.47 = 279,322.02/x
  3. Step 3: Cross multiply
    505,676.52x = 697,831.47 × 279,322.02
  4. Step 4: Simplify right side
    505,676.52x = 194,919,695,819.97
  5. Step 5: Solve for x
    x = 194,919,695,819.97/505,676.52
  6. Step 6: Final answer
    x = 385,463.21

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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.