Home / 824,009.80-1,236,014.70-505,145.20

Finding the Fourth Proportional to 824,009.80, 1,236,014.70 and 505,145.20

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Solution

The fourth proportional to 824,009.80, 1,236,014.70 and 505,145.20 is: 757,717.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    824,009.80 : 1,236,014.70 = 505,145.20 : x
  2. Step 2: Convert to fraction form
    824,009.80/1,236,014.70 = 505,145.20/x
  3. Step 3: Cross multiply
    824,009.80x = 1,236,014.70 × 505,145.20
  4. Step 4: Simplify right side
    824,009.80x = 624,366,892,834.44
  5. Step 5: Solve for x
    x = 624,366,892,834.44/824,009.80
  6. Step 6: Final answer
    x = 757,717.80

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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.