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Finding the Fourth Proportional to 612,970.88, 919,447.09 and 275,773.41

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Solution

The fourth proportional to 612,970.88, 919,447.09 and 275,773.41 is: 413,655.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,970.88 : 919,447.09 = 275,773.41 : x
  2. Step 2: Convert to fraction form
    612,970.88/919,447.09 = 275,773.41/x
  3. Step 3: Cross multiply
    612,970.88x = 919,447.09 × 275,773.41
  4. Step 4: Simplify right side
    612,970.88x = 253,559,059,991.76
  5. Step 5: Solve for x
    x = 253,559,059,991.76/612,970.88
  6. Step 6: Final answer
    x = 413,655.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.