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Finding the Fourth Proportional to 631,579.28, 871,585.52 and 345,099.32

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Solution

The fourth proportional to 631,579.28, 871,585.52 and 345,099.32 is: 476,240.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,579.28 : 871,585.52 = 345,099.32 : x
  2. Step 2: Convert to fraction form
    631,579.28/871,585.52 = 345,099.32/x
  3. Step 3: Cross multiply
    631,579.28x = 871,585.52 × 345,099.32
  4. Step 4: Simplify right side
    631,579.28x = 300,783,570,273.85
  5. Step 5: Solve for x
    x = 300,783,570,273.85/631,579.28
  6. Step 6: Final answer
    x = 476,240.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.