Home / 685,984.32-1,029,015.32-212,736.96

Finding the Fourth Proportional to 685,984.32, 1,029,015.32 and 212,736.96

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Solution

The fourth proportional to 685,984.32, 1,029,015.32 and 212,736.96 is: 319,117.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,984.32 : 1,029,015.32 = 212,736.96 : x
  2. Step 2: Convert to fraction form
    685,984.32/1,029,015.32 = 212,736.96/x
  3. Step 3: Cross multiply
    685,984.32x = 1,029,015.32 × 212,736.96
  4. Step 4: Simplify right side
    685,984.32x = 218,909,590,970.23
  5. Step 5: Solve for x
    x = 218,909,590,970.23/685,984.32
  6. Step 6: Final answer
    x = 319,117.49

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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.