Home / 679,749.44-938,100.08-449,910.80

Finding the Fourth Proportional to 679,749.44, 938,100.08 and 449,910.80

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Solution

The fourth proportional to 679,749.44, 938,100.08 and 449,910.80 is: 620,907.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,749.44 : 938,100.08 = 449,910.80 : x
  2. Step 2: Convert to fraction form
    679,749.44/938,100.08 = 449,910.80/x
  3. Step 3: Cross multiply
    679,749.44x = 938,100.08 × 449,910.80
  4. Step 4: Simplify right side
    679,749.44x = 422,061,357,472.86
  5. Step 5: Solve for x
    x = 422,061,357,472.86/679,749.44
  6. Step 6: Final answer
    x = 620,907.25

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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.