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Finding the Fourth Proportional to 485,596.37, 670,171.98 and 281,709.65

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Solution

The fourth proportional to 485,596.37, 670,171.98 and 281,709.65 is: 388,787.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,596.37 : 670,171.98 = 281,709.65 : x
  2. Step 2: Convert to fraction form
    485,596.37/670,171.98 = 281,709.65/x
  3. Step 3: Cross multiply
    485,596.37x = 670,171.98 × 281,709.65
  4. Step 4: Simplify right side
    485,596.37x = 188,793,910,574.75
  5. Step 5: Solve for x
    x = 188,793,910,574.75/485,596.37
  6. Step 6: Final answer
    x = 388,787.73

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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.