Home / 842,928-1,264,129.56-281,831.28

Finding the Fourth Proportional to 842,928, 1,264,129.56 and 281,831.28

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Solution

The fourth proportional to 842,928, 1,264,129.56 and 281,831.28 is: 422,659.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,928 : 1,264,129.56 = 281,831.28 : x
  2. Step 2: Convert to fraction form
    842,928/1,264,129.56 = 281,831.28/x
  3. Step 3: Cross multiply
    842,928x = 1,264,129.56 × 281,831.28
  4. Step 4: Simplify right side
    842,928x = 356,271,251,980.64
  5. Step 5: Solve for x
    x = 356,271,251,980.64/842,928
  6. Step 6: Final answer
    x = 422,659.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.