Home / 667,755.63-921,822.26-381,220.29

Finding the Fourth Proportional to 667,755.63, 921,822.26 and 381,220.29

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Solution

The fourth proportional to 667,755.63, 921,822.26 and 381,220.29 is: 526,266.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,755.63 : 921,822.26 = 381,220.29 : x
  2. Step 2: Convert to fraction form
    667,755.63/921,822.26 = 381,220.29/x
  3. Step 3: Cross multiply
    667,755.63x = 921,822.26 × 381,220.29
  4. Step 4: Simplify right side
    667,755.63x = 351,417,347,379.55
  5. Step 5: Solve for x
    x = 351,417,347,379.55/667,755.63
  6. Step 6: Final answer
    x = 526,266.39

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1.5x scale

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.