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Finding the Fourth Proportional to 449,656.06, 620,814.63 and 288,580.54

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Solution

The fourth proportional to 449,656.06, 620,814.63 and 288,580.54 is: 398,426.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,656.06 : 620,814.63 = 288,580.54 : x
  2. Step 2: Convert to fraction form
    449,656.06/620,814.63 = 288,580.54/x
  3. Step 3: Cross multiply
    449,656.06x = 620,814.63 × 288,580.54
  4. Step 4: Simplify right side
    449,656.06x = 179,155,021,165.30
  5. Step 5: Solve for x
    x = 179,155,021,165.30/449,656.06
  6. Step 6: Final answer
    x = 398,426.79

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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.