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Finding the Fourth Proportional to 2,078,398, 3,117,687.84 and 658,558.72

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Solution

The fourth proportional to 2,078,398, 3,117,687.84 and 658,558.72 is: 987,866.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,078,398 : 3,117,687.84 = 658,558.72 : x
  2. Step 2: Convert to fraction form
    2,078,398/3,117,687.84 = 658,558.72/x
  3. Step 3: Cross multiply
    2,078,398x = 3,117,687.84 × 658,558.72
  4. Step 4: Simplify right side
    2,078,398x = 2,053,180,513,269.96
  5. Step 5: Solve for x
    x = 2,053,180,513,269.96/2,078,398
  6. Step 6: Final answer
    x = 987,866.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.