Home / 920,601-1,380,918.78-255,770.28

Finding the Fourth Proportional to 920,601, 1,380,918.78 and 255,770.28

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Solution

The fourth proportional to 920,601, 1,380,918.78 and 255,770.28 is: 383,660.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,601 : 1,380,918.78 = 255,770.28 : x
  2. Step 2: Convert to fraction form
    920,601/1,380,918.78 = 255,770.28/x
  3. Step 3: Cross multiply
    920,601x = 1,380,918.78 × 255,770.28
  4. Step 4: Simplify right side
    920,601x = 353,197,983,017.86
  5. Step 5: Solve for x
    x = 353,197,983,017.86/920,601
  6. Step 6: Final answer
    x = 383,660.22

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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.