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Finding the Fourth Proportional to 667,576, 921,254.88 and 365,776.96

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Solution

The fourth proportional to 667,576, 921,254.88 and 365,776.96 is: 504,772.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,576 : 921,254.88 = 365,776.96 : x
  2. Step 2: Convert to fraction form
    667,576/921,254.88 = 365,776.96/x
  3. Step 3: Cross multiply
    667,576x = 921,254.88 × 365,776.96
  4. Step 4: Simplify right side
    667,576x = 336,973,809,391.57
  5. Step 5: Solve for x
    x = 336,973,809,391.57/667,576
  6. Step 6: Final answer
    x = 504,772.20

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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.