Home / 547,112.12-755,140.68-320,830.52

Finding the Fourth Proportional to 547,112.12, 755,140.68 and 320,830.52

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Solution

The fourth proportional to 547,112.12, 755,140.68 and 320,830.52 is: 442,819.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,112.12 : 755,140.68 = 320,830.52 : x
  2. Step 2: Convert to fraction form
    547,112.12/755,140.68 = 320,830.52/x
  3. Step 3: Cross multiply
    547,112.12x = 755,140.68 × 320,830.52
  4. Step 4: Simplify right side
    547,112.12x = 242,272,177,037.55
  5. Step 5: Solve for x
    x = 242,272,177,037.55/547,112.12
  6. Step 6: Final answer
    x = 442,819.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.