Home / 492,005.10-678,980.16-277,132.35

Finding the Fourth Proportional to 492,005.10, 678,980.16 and 277,132.35

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Solution

The fourth proportional to 492,005.10, 678,980.16 and 277,132.35 is: 382,450.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,005.10 : 678,980.16 = 277,132.35 : x
  2. Step 2: Convert to fraction form
    492,005.10/678,980.16 = 277,132.35/x
  3. Step 3: Cross multiply
    492,005.10x = 678,980.16 × 277,132.35
  4. Step 4: Simplify right side
    492,005.10x = 188,167,367,344.18
  5. Step 5: Solve for x
    x = 188,167,367,344.18/492,005.10
  6. Step 6: Final answer
    x = 382,450.03

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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.