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Finding the Fourth Proportional to 609,274.45, 840,980.96 and 394,429.02

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Solution

The fourth proportional to 609,274.45, 840,980.96 and 394,429.02 is: 544,430.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,274.45 : 840,980.96 = 394,429.02 : x
  2. Step 2: Convert to fraction form
    609,274.45/840,980.96 = 394,429.02/x
  3. Step 3: Cross multiply
    609,274.45x = 840,980.96 × 394,429.02
  4. Step 4: Simplify right side
    609,274.45x = 331,707,295,891.46
  5. Step 5: Solve for x
    x = 331,707,295,891.46/609,274.45
  6. Step 6: Final answer
    x = 544,430.01

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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.