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Finding the Fourth Proportional to 836,448.30, 1,254,672.45 and 275,409.90

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Solution

The fourth proportional to 836,448.30, 1,254,672.45 and 275,409.90 is: 413,114.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    836,448.30 : 1,254,672.45 = 275,409.90 : x
  2. Step 2: Convert to fraction form
    836,448.30/1,254,672.45 = 275,409.90/x
  3. Step 3: Cross multiply
    836,448.30x = 1,254,672.45 × 275,409.90
  4. Step 4: Simplify right side
    836,448.30x = 345,549,213,987.26
  5. Step 5: Solve for x
    x = 345,549,213,987.26/836,448.30
  6. Step 6: Final answer
    x = 413,114.85

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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.