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Finding the Fourth Proportional to 449,365.60, 620,033.16 and 286,087.44

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Solution

The fourth proportional to 449,365.60, 620,033.16 and 286,087.44 is: 394,742.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,365.60 : 620,033.16 = 286,087.44 : x
  2. Step 2: Convert to fraction form
    449,365.60/620,033.16 = 286,087.44/x
  3. Step 3: Cross multiply
    449,365.60x = 620,033.16 × 286,087.44
  4. Step 4: Simplify right side
    449,365.60x = 177,383,699,459.51
  5. Step 5: Solve for x
    x = 177,383,699,459.51/449,365.60
  6. Step 6: Final answer
    x = 394,742.50

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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.