Home / 859,481.78-1,186,015.32-496,928.90

Finding the Fourth Proportional to 859,481.78, 1,186,015.32 and 496,928.90

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Solution

The fourth proportional to 859,481.78, 1,186,015.32 and 496,928.90 is: 685,721.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,481.78 : 1,186,015.32 = 496,928.90 : x
  2. Step 2: Convert to fraction form
    859,481.78/1,186,015.32 = 496,928.90/x
  3. Step 3: Cross multiply
    859,481.78x = 1,186,015.32 × 496,928.90
  4. Step 4: Simplify right side
    859,481.78x = 589,365,288,350.75
  5. Step 5: Solve for x
    x = 589,365,288,350.75/859,481.78
  6. Step 6: Final answer
    x = 685,721.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.