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Finding the Fourth Proportional to 547,070.76, 755,083.62 and 320,789.16

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Solution

The fourth proportional to 547,070.76, 755,083.62 and 320,789.16 is: 442,762.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,070.76 : 755,083.62 = 320,789.16 : x
  2. Step 2: Convert to fraction form
    547,070.76/755,083.62 = 320,789.16/x
  3. Step 3: Cross multiply
    547,070.76x = 755,083.62 × 320,789.16
  4. Step 4: Simplify right side
    547,070.76x = 242,222,640,189.56
  5. Step 5: Solve for x
    x = 242,222,640,189.56/547,070.76
  6. Step 6: Final answer
    x = 442,762.91

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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.