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Finding the Fourth Proportional to 609,466.55, 840,784.66 and 394,675.81

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Solution

The fourth proportional to 609,466.55, 840,784.66 and 394,675.81 is: 544,471.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,466.55 : 840,784.66 = 394,675.81 : x
  2. Step 2: Convert to fraction form
    609,466.55/840,784.66 = 394,675.81/x
  3. Step 3: Cross multiply
    609,466.55x = 840,784.66 × 394,675.81
  4. Step 4: Simplify right side
    609,466.55x = 331,837,363,632.42
  5. Step 5: Solve for x
    x = 331,837,363,632.42/609,466.55
  6. Step 6: Final answer
    x = 544,471.83

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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.