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Finding the Fourth Proportional to 609,627.25, 910,733.05 and 394,643.79

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Solution

The fourth proportional to 609,627.25, 910,733.05 and 394,643.79 is: 589,565.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,627.25 : 910,733.05 = 394,643.79 : x
  2. Step 2: Convert to fraction form
    609,627.25/910,733.05 = 394,643.79/x
  3. Step 3: Cross multiply
    609,627.25x = 910,733.05 × 394,643.79
  4. Step 4: Simplify right side
    609,627.25x = 359,415,138,797.22
  5. Step 5: Solve for x
    x = 359,415,138,797.22/609,627.25
  6. Step 6: Final answer
    x = 589,565.40

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.