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Finding the Fourth Proportional to 878,846.08, 1,212,794.88 and 496,860.16

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Solution

The fourth proportional to 878,846.08, 1,212,794.88 and 496,860.16 is: 685,659.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,846.08 : 1,212,794.88 = 496,860.16 : x
  2. Step 2: Convert to fraction form
    878,846.08/1,212,794.88 = 496,860.16/x
  3. Step 3: Cross multiply
    878,846.08x = 1,212,794.88 × 496,860.16
  4. Step 4: Simplify right side
    878,846.08x = 602,589,458,123.98
  5. Step 5: Solve for x
    x = 602,589,458,123.98/878,846.08
  6. Step 6: Final answer
    x = 685,659.83

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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.