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Finding the Fourth Proportional to 1,231,920, 1,700,049.60 and 666,672

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Solution

The fourth proportional to 1,231,920, 1,700,049.60 and 666,672 is: 920,007.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,920 : 1,700,049.60 = 666,672 : x
  2. Step 2: Convert to fraction form
    1,231,920/1,700,049.60 = 666,672/x
  3. Step 3: Cross multiply
    1,231,920x = 1,700,049.60 × 666,672
  4. Step 4: Simplify right side
    1,231,920x = 1,133,375,466,931.20
  5. Step 5: Solve for x
    x = 1,133,375,466,931.20/1,231,920
  6. Step 6: Final answer
    x = 920,007.36

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.