Home / 763,103.20-1,144,136.40-289,717.60

Finding the Fourth Proportional to 763,103.20, 1,144,136.40 and 289,717.60

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Solution

The fourth proportional to 763,103.20, 1,144,136.40 and 289,717.60 is: 434,379.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,103.20 : 1,144,136.40 = 289,717.60 : x
  2. Step 2: Convert to fraction form
    763,103.20/1,144,136.40 = 289,717.60/x
  3. Step 3: Cross multiply
    763,103.20x = 1,144,136.40 × 289,717.60
  4. Step 4: Simplify right side
    763,103.20x = 331,476,451,880.64
  5. Step 5: Solve for x
    x = 331,476,451,880.64/763,103.20
  6. Step 6: Final answer
    x = 434,379.59

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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.