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Finding the Fourth Proportional to 609,715.88, 841,128.30 and 394,925

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Solution

The fourth proportional to 609,715.88, 841,128.30 and 394,925 is: 544,815.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,715.88 : 841,128.30 = 394,925 : x
  2. Step 2: Convert to fraction form
    609,715.88/841,128.30 = 394,925/x
  3. Step 3: Cross multiply
    609,715.88x = 841,128.30 × 394,925
  4. Step 4: Simplify right side
    609,715.88x = 332,182,593,877.50
  5. Step 5: Solve for x
    x = 332,182,593,877.50/609,715.88
  6. Step 6: Final answer
    x = 544,815.39

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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.