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Finding the Fourth Proportional to 835,362.40, 1,253,043.60 and 274,261.60

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Solution

The fourth proportional to 835,362.40, 1,253,043.60 and 274,261.60 is: 411,392.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    835,362.40 : 1,253,043.60 = 274,261.60 : x
  2. Step 2: Convert to fraction form
    835,362.40/1,253,043.60 = 274,261.60/x
  3. Step 3: Cross multiply
    835,362.40x = 1,253,043.60 × 274,261.60
  4. Step 4: Simplify right side
    835,362.40x = 343,661,742,605.76
  5. Step 5: Solve for x
    x = 343,661,742,605.76/835,362.40
  6. Step 6: Final answer
    x = 411,392.40

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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.