Home / 455,831.42-683,747.62-118,871.78

Finding the Fourth Proportional to 455,831.42, 683,747.62 and 118,871.78

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Solution

The fourth proportional to 455,831.42, 683,747.62 and 118,871.78 is: 178,307.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,831.42 : 683,747.62 = 118,871.78 : x
  2. Step 2: Convert to fraction form
    455,831.42/683,747.62 = 118,871.78/x
  3. Step 3: Cross multiply
    455,831.42x = 683,747.62 × 118,871.78
  4. Step 4: Simplify right side
    455,831.42x = 81,278,296,660.16
  5. Step 5: Solve for x
    x = 81,278,296,660.16/455,831.42
  6. Step 6: Final answer
    x = 178,307.80

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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.