Home / 492,009.23-678,985.86-277,136.48

Finding the Fourth Proportional to 492,009.23, 678,985.86 and 277,136.48

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Solution

The fourth proportional to 492,009.23, 678,985.86 and 277,136.48 is: 382,455.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,009.23 : 678,985.86 = 277,136.48 : x
  2. Step 2: Convert to fraction form
    492,009.23/678,985.86 = 277,136.48/x
  3. Step 3: Cross multiply
    492,009.23x = 678,985.86 × 277,136.48
  4. Step 4: Simplify right side
    492,009.23x = 188,171,747,815.24
  5. Step 5: Solve for x
    x = 188,171,747,815.24/492,009.23
  6. Step 6: Final answer
    x = 382,455.73

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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.