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Finding the Fourth Proportional to 667,634.63, 921,335.79 and 365,822.15

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Solution

The fourth proportional to 667,634.63, 921,335.79 and 365,822.15 is: 504,834.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,634.63 : 921,335.79 = 365,822.15 : x
  2. Step 2: Convert to fraction form
    667,634.63/921,335.79 = 365,822.15/x
  3. Step 3: Cross multiply
    667,634.63x = 921,335.79 × 365,822.15
  4. Step 4: Simplify right side
    667,634.63x = 337,045,039,569.75
  5. Step 5: Solve for x
    x = 337,045,039,569.75/667,634.63
  6. Step 6: Final answer
    x = 504,834.57

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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.