Home / 678,416.80-1,017,625.20-172,976.80

Finding the Fourth Proportional to 678,416.80, 1,017,625.20 and 172,976.80

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Solution

The fourth proportional to 678,416.80, 1,017,625.20 and 172,976.80 is: 259,465.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,416.80 : 1,017,625.20 = 172,976.80 : x
  2. Step 2: Convert to fraction form
    678,416.80/1,017,625.20 = 172,976.80/x
  3. Step 3: Cross multiply
    678,416.80x = 1,017,625.20 × 172,976.80
  4. Step 4: Simplify right side
    678,416.80x = 176,025,550,695.36
  5. Step 5: Solve for x
    x = 176,025,550,695.36/678,416.80
  6. Step 6: Final answer
    x = 259,465.20

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.