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Finding the Fourth Proportional to 547,091.79, 755,112.64 and 320,810.19

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Solution

The fourth proportional to 547,091.79, 755,112.64 and 320,810.19 is: 442,791.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,091.79 : 755,112.64 = 320,810.19 : x
  2. Step 2: Convert to fraction form
    547,091.79/755,112.64 = 320,810.19/x
  3. Step 3: Cross multiply
    547,091.79x = 755,112.64 × 320,810.19
  4. Step 4: Simplify right side
    547,091.79x = 242,247,831,656.73
  5. Step 5: Solve for x
    x = 242,247,831,656.73/547,091.79
  6. Step 6: Final answer
    x = 442,791.93

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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.