Home / 761,120.78-1,140,855.91-381,125.41

Finding the Fourth Proportional to 761,120.78, 1,140,855.91 and 381,125.41

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Solution

The fourth proportional to 761,120.78, 1,140,855.91 and 381,125.41 is: 571,274.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,120.78 : 1,140,855.91 = 381,125.41 : x
  2. Step 2: Convert to fraction form
    761,120.78/1,140,855.91 = 381,125.41/x
  3. Step 3: Cross multiply
    761,120.78x = 1,140,855.91 × 381,125.41
  4. Step 4: Simplify right side
    761,120.78x = 434,809,172,644.72
  5. Step 5: Solve for x
    x = 434,809,172,644.72/761,120.78
  6. Step 6: Final answer
    x = 571,274.87

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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.