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Finding the Fourth Proportional to 561,624.90, 775,181.64 and 320,050.80

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Solution

The fourth proportional to 561,624.90, 775,181.64 and 320,050.80 is: 441,749.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,624.90 : 775,181.64 = 320,050.80 : x
  2. Step 2: Convert to fraction form
    561,624.90/775,181.64 = 320,050.80/x
  3. Step 3: Cross multiply
    561,624.90x = 775,181.64 × 320,050.80
  4. Step 4: Simplify right side
    561,624.90x = 248,097,504,027.31
  5. Step 5: Solve for x
    x = 248,097,504,027.31/561,624.90
  6. Step 6: Final answer
    x = 441,749.47

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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.