Home / 719,145.79-1,078,438.12-269,621.30

Finding the Fourth Proportional to 719,145.79, 1,078,438.12 and 269,621.30

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Solution

The fourth proportional to 719,145.79, 1,078,438.12 and 269,621.30 is: 404,326.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,145.79 : 1,078,438.12 = 269,621.30 : x
  2. Step 2: Convert to fraction form
    719,145.79/1,078,438.12 = 269,621.30/x
  3. Step 3: Cross multiply
    719,145.79x = 1,078,438.12 × 269,621.30
  4. Step 4: Simplify right side
    719,145.79x = 290,769,889,906.00
  5. Step 5: Solve for x
    x = 290,769,889,906.00/719,145.79
  6. Step 6: Final answer
    x = 404,326.77

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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.