Home / 684,749.80-1,027,124.70-329,678.20

Finding the Fourth Proportional to 684,749.80, 1,027,124.70 and 329,678.20

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Solution

The fourth proportional to 684,749.80, 1,027,124.70 and 329,678.20 is: 494,517.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,749.80 : 1,027,124.70 = 329,678.20 : x
  2. Step 2: Convert to fraction form
    684,749.80/1,027,124.70 = 329,678.20/x
  3. Step 3: Cross multiply
    684,749.80x = 1,027,124.70 × 329,678.20
  4. Step 4: Simplify right side
    684,749.80x = 338,620,622,271.54
  5. Step 5: Solve for x
    x = 338,620,622,271.54/684,749.80
  6. Step 6: Final answer
    x = 494,517.30

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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.