Home / 878,633.78-1,212,498.57-496,660.56

Finding the Fourth Proportional to 878,633.78, 1,212,498.57 and 496,660.56

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Solution

The fourth proportional to 878,633.78, 1,212,498.57 and 496,660.56 is: 685,382.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,633.78 : 1,212,498.57 = 496,660.56 : x
  2. Step 2: Convert to fraction form
    878,633.78/1,212,498.57 = 496,660.56/x
  3. Step 3: Cross multiply
    878,633.78x = 1,212,498.57 × 496,660.56
  4. Step 4: Simplify right side
    878,633.78x = 602,200,220,117.60
  5. Step 5: Solve for x
    x = 602,200,220,117.60/878,633.78
  6. Step 6: Final answer
    x = 685,382.50

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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.