Home / 1,214,096.60-1,821,144.90-426,128.60

Finding the Fourth Proportional to 1,214,096.60, 1,821,144.90 and 426,128.60

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Solution

The fourth proportional to 1,214,096.60, 1,821,144.90 and 426,128.60 is: 639,192.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214,096.60 : 1,821,144.90 = 426,128.60 : x
  2. Step 2: Convert to fraction form
    1,214,096.60/1,821,144.90 = 426,128.60/x
  3. Step 3: Cross multiply
    1,214,096.60x = 1,821,144.90 × 426,128.60
  4. Step 4: Simplify right side
    1,214,096.60x = 776,041,926,634.14
  5. Step 5: Solve for x
    x = 776,041,926,634.14/1,214,096.60
  6. Step 6: Final answer
    x = 639,192.90

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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.