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Finding the Fourth Proportional to 892,236, 1,231,294.32 and 489,836.64

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Solution

The fourth proportional to 892,236, 1,231,294.32 and 489,836.64 is: 675,979.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    892,236 : 1,231,294.32 = 489,836.64 : x
  2. Step 2: Convert to fraction form
    892,236/1,231,294.32 = 489,836.64/x
  3. Step 3: Cross multiply
    892,236x = 1,231,294.32 × 489,836.64
  4. Step 4: Simplify right side
    892,236x = 603,133,072,559.89
  5. Step 5: Solve for x
    x = 603,133,072,559.89/892,236
  6. Step 6: Final answer
    x = 675,979.31

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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.