Home / 842,520.56-1,263,780.85-281,555.06

Finding the Fourth Proportional to 842,520.56, 1,263,780.85 and 281,555.06

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Solution

The fourth proportional to 842,520.56, 1,263,780.85 and 281,555.06 is: 422,332.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,520.56 : 1,263,780.85 = 281,555.06 : x
  2. Step 2: Convert to fraction form
    842,520.56/1,263,780.85 = 281,555.06/x
  3. Step 3: Cross multiply
    842,520.56x = 1,263,780.85 × 281,555.06
  4. Step 4: Simplify right side
    842,520.56x = 355,823,893,048.60
  5. Step 5: Solve for x
    x = 355,823,893,048.60/842,520.56
  6. Step 6: Final answer
    x = 422,332.59

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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.