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Finding the Fourth Proportional to 892,486, 1,231,506.74 and 524,979.78

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Solution

The fourth proportional to 892,486, 1,231,506.74 and 524,979.78 is: 724,399.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    892,486 : 1,231,506.74 = 524,979.78 : x
  2. Step 2: Convert to fraction form
    892,486/1,231,506.74 = 524,979.78/x
  3. Step 3: Cross multiply
    892,486x = 1,231,506.74 × 524,979.78
  4. Step 4: Simplify right side
    892,486x = 646,516,137,433.72
  5. Step 5: Solve for x
    x = 646,516,137,433.72/892,486
  6. Step 6: Final answer
    x = 724,399.19

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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.