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Finding the Fourth Proportional to 522,365.77, 720,968.15 and 338,831.79

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Solution

The fourth proportional to 522,365.77, 720,968.15 and 338,831.79 is: 467,654.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,365.77 : 720,968.15 = 338,831.79 : x
  2. Step 2: Convert to fraction form
    522,365.77/720,968.15 = 338,831.79/x
  3. Step 3: Cross multiply
    522,365.77x = 720,968.15 × 338,831.79
  4. Step 4: Simplify right side
    522,365.77x = 244,286,928,797.49
  5. Step 5: Solve for x
    x = 244,286,928,797.49/522,365.77
  6. Step 6: Final answer
    x = 467,654.93

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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.