Home / 920,422.38-1,380,414.84-414,671.34

Finding the Fourth Proportional to 920,422.38, 1,380,414.84 and 414,671.34

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Solution

The fourth proportional to 920,422.38, 1,380,414.84 and 414,671.34 is: 621,908.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,422.38 : 1,380,414.84 = 414,671.34 : x
  2. Step 2: Convert to fraction form
    920,422.38/1,380,414.84 = 414,671.34/x
  3. Step 3: Cross multiply
    920,422.38x = 1,380,414.84 × 414,671.34
  4. Step 4: Simplify right side
    920,422.38x = 572,418,471,458.69
  5. Step 5: Solve for x
    x = 572,418,471,458.69/920,422.38
  6. Step 6: Final answer
    x = 621,908.47

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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.