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Finding the Fourth Proportional to 667,693.44, 921,386.88 and 365,880.96

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Solution

The fourth proportional to 667,693.44, 921,386.88 and 365,880.96 is: 504,899.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,693.44 : 921,386.88 = 365,880.96 : x
  2. Step 2: Convert to fraction form
    667,693.44/921,386.88 = 365,880.96/x
  3. Step 3: Cross multiply
    667,693.44x = 921,386.88 × 365,880.96
  4. Step 4: Simplify right side
    667,693.44x = 337,117,916,185.81
  5. Step 5: Solve for x
    x = 337,117,916,185.81/667,693.44
  6. Step 6: Final answer
    x = 504,899.25

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Similar ratio
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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.