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Finding the Fourth Proportional to 489,082.10, 685,959.10 and 489,082.10

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Solution

The fourth proportional to 489,082.10, 685,959.10 and 489,082.10 is: 685,959.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,082.10 : 685,959.10 = 489,082.10 : x
  2. Step 2: Convert to fraction form
    489,082.10/685,959.10 = 489,082.10/x
  3. Step 3: Cross multiply
    489,082.10x = 685,959.10 × 489,082.10
  4. Step 4: Simplify right side
    489,082.10x = 335,490,317,142.11
  5. Step 5: Solve for x
    x = 335,490,317,142.11/489,082.10
  6. Step 6: Final answer
    x = 685,959.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.