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Finding the Fourth Proportional to 836,449.80, 1,254,674.70 and 275,411.40

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Solution

The fourth proportional to 836,449.80, 1,254,674.70 and 275,411.40 is: 413,117.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    836,449.80 : 1,254,674.70 = 275,411.40 : x
  2. Step 2: Convert to fraction form
    836,449.80/1,254,674.70 = 275,411.40/x
  3. Step 3: Cross multiply
    836,449.80x = 1,254,674.70 × 275,411.40
  4. Step 4: Simplify right side
    836,449.80x = 345,551,715,671.58
  5. Step 5: Solve for x
    x = 345,551,715,671.58/836,449.80
  6. Step 6: Final answer
    x = 413,117.10

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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.