Home / 678,321.60-1,017,504.06-341,178.13

Finding the Fourth Proportional to 678,321.60, 1,017,504.06 and 341,178.13

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Solution

The fourth proportional to 678,321.60, 1,017,504.06 and 341,178.13 is: 511,778.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,321.60 : 1,017,504.06 = 341,178.13 : x
  2. Step 2: Convert to fraction form
    678,321.60/1,017,504.06 = 341,178.13/x
  3. Step 3: Cross multiply
    678,321.60x = 1,017,504.06 × 341,178.13
  4. Step 4: Simplify right side
    678,321.60x = 347,150,132,458.21
  5. Step 5: Solve for x
    x = 347,150,132,458.21/678,321.60
  6. Step 6: Final answer
    x = 511,778.09

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Double scale
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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.