Home / 842,503.78-1,263,755.67-281,538.28

Finding the Fourth Proportional to 842,503.78, 1,263,755.67 and 281,538.28

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Solution

The fourth proportional to 842,503.78, 1,263,755.67 and 281,538.28 is: 422,307.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,503.78 : 1,263,755.67 = 281,538.28 : x
  2. Step 2: Convert to fraction form
    842,503.78/1,263,755.67 = 281,538.28/x
  3. Step 3: Cross multiply
    842,503.78x = 1,263,755.67 × 281,538.28
  4. Step 4: Simplify right side
    842,503.78x = 355,795,599,779.63
  5. Step 5: Solve for x
    x = 355,795,599,779.63/842,503.78
  6. Step 6: Final answer
    x = 422,307.42

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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.