Home / 742,840.80-1,114,261.20-269,541.60

Finding the Fourth Proportional to 742,840.80, 1,114,261.20 and 269,541.60

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Solution

The fourth proportional to 742,840.80, 1,114,261.20 and 269,541.60 is: 404,312.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,840.80 : 1,114,261.20 = 269,541.60 : x
  2. Step 2: Convert to fraction form
    742,840.80/1,114,261.20 = 269,541.60/x
  3. Step 3: Cross multiply
    742,840.80x = 1,114,261.20 × 269,541.60
  4. Step 4: Simplify right side
    742,840.80x = 300,339,746,665.92
  5. Step 5: Solve for x
    x = 300,339,746,665.92/742,840.80
  6. Step 6: Final answer
    x = 404,312.40

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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.