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Finding the Fourth Proportional to 405,324.96, 608,110.48 and 287,224.80

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Solution

The fourth proportional to 405,324.96, 608,110.48 and 287,224.80 is: 430,924.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,324.96 : 608,110.48 = 287,224.80 : x
  2. Step 2: Convert to fraction form
    405,324.96/608,110.48 = 287,224.80/x
  3. Step 3: Cross multiply
    405,324.96x = 608,110.48 × 287,224.80
  4. Step 4: Simplify right side
    405,324.96x = 174,664,410,995.90
  5. Step 5: Solve for x
    x = 174,664,410,995.90/405,324.96
  6. Step 6: Final answer
    x = 430,924.39

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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.