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Finding the Fourth Proportional to 836,661.80, 1,254,992.70 and 275,623.40

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Solution

The fourth proportional to 836,661.80, 1,254,992.70 and 275,623.40 is: 413,435.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    836,661.80 : 1,254,992.70 = 275,623.40 : x
  2. Step 2: Convert to fraction form
    836,661.80/1,254,992.70 = 275,623.40/x
  3. Step 3: Cross multiply
    836,661.80x = 1,254,992.70 × 275,623.40
  4. Step 4: Simplify right side
    836,661.80x = 345,905,354,949.18
  5. Step 5: Solve for x
    x = 345,905,354,949.18/836,661.80
  6. Step 6: Final answer
    x = 413,435.10

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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.