Home / 685,982.32-1,029,012.32-212,734.96

Finding the Fourth Proportional to 685,982.32, 1,029,012.32 and 212,734.96

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Solution

The fourth proportional to 685,982.32, 1,029,012.32 and 212,734.96 is: 319,114.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,982.32 : 1,029,012.32 = 212,734.96 : x
  2. Step 2: Convert to fraction form
    685,982.32/1,029,012.32 = 212,734.96/x
  3. Step 3: Cross multiply
    685,982.32x = 1,029,012.32 × 212,734.96
  4. Step 4: Simplify right side
    685,982.32x = 218,906,894,734.71
  5. Step 5: Solve for x
    x = 218,906,894,734.71/685,982.32
  6. Step 6: Final answer
    x = 319,114.48

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1.5x scale

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.