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Finding the Fourth Proportional to 547,091.76, 755,112.60 and 320,810.16

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Solution

The fourth proportional to 547,091.76, 755,112.60 and 320,810.16 is: 442,791.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,091.76 : 755,112.60 = 320,810.16 : x
  2. Step 2: Convert to fraction form
    547,091.76/755,112.60 = 320,810.16/x
  3. Step 3: Cross multiply
    547,091.76x = 755,112.60 × 320,810.16
  4. Step 4: Simplify right side
    547,091.76x = 242,247,794,024.02
  5. Step 5: Solve for x
    x = 242,247,794,024.02/547,091.76
  6. Step 6: Final answer
    x = 442,791.89

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1.5x scale

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.