Home / 689,910.56-1,035,021.32-210,181.28

Finding the Fourth Proportional to 689,910.56, 1,035,021.32 and 210,181.28

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Solution

The fourth proportional to 689,910.56, 1,035,021.32 and 210,181.28 is: 315,319.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,910.56 : 1,035,021.32 = 210,181.28 : x
  2. Step 2: Convert to fraction form
    689,910.56/1,035,021.32 = 210,181.28/x
  3. Step 3: Cross multiply
    689,910.56x = 1,035,021.32 × 210,181.28
  4. Step 4: Simplify right side
    689,910.56x = 217,542,105,864.89
  5. Step 5: Solve for x
    x = 217,542,105,864.89/689,910.56
  6. Step 6: Final answer
    x = 315,319.29

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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.