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Finding the Fourth Proportional to 561,627.90, 775,185.78 and 320,053.80

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Solution

The fourth proportional to 561,627.90, 775,185.78 and 320,053.80 is: 441,753.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,627.90 : 775,185.78 = 320,053.80 : x
  2. Step 2: Convert to fraction form
    561,627.90/775,185.78 = 320,053.80/x
  3. Step 3: Cross multiply
    561,627.90x = 775,185.78 × 320,053.80
  4. Step 4: Simplify right side
    561,627.90x = 248,101,154,594.96
  5. Step 5: Solve for x
    x = 248,101,154,594.96/561,627.90
  6. Step 6: Final answer
    x = 441,753.61

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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.