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Finding the Fourth Proportional to 455,048.11, 682,572.16 and 426,999.84

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Solution

The fourth proportional to 455,048.11, 682,572.16 and 426,999.84 is: 640,499.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,048.11 : 682,572.16 = 426,999.84 : x
  2. Step 2: Convert to fraction form
    455,048.11/682,572.16 = 426,999.84/x
  3. Step 3: Cross multiply
    455,048.11x = 682,572.16 × 426,999.84
  4. Step 4: Simplify right side
    455,048.11x = 291,458,203,108.45
  5. Step 5: Solve for x
    x = 291,458,203,108.45/455,048.11
  6. Step 6: Final answer
    x = 640,499.76

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.