Home / 842,129.52-1,263,142.44-281,117.04

Finding the Fourth Proportional to 842,129.52, 1,263,142.44 and 281,117.04

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Solution

The fourth proportional to 842,129.52, 1,263,142.44 and 281,117.04 is: 421,658.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,129.52 : 1,263,142.44 = 281,117.04 : x
  2. Step 2: Convert to fraction form
    842,129.52/1,263,142.44 = 281,117.04/x
  3. Step 3: Cross multiply
    842,129.52x = 1,263,142.44 × 281,117.04
  4. Step 4: Simplify right side
    842,129.52x = 355,090,863,831.18
  5. Step 5: Solve for x
    x = 355,090,863,831.18/842,129.52
  6. Step 6: Final answer
    x = 421,658.25

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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.