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Finding the Fourth Proportional to 631,505.10, 871,466.84 and 345,019.04

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Solution

The fourth proportional to 631,505.10, 871,466.84 and 345,019.04 is: 476,120.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,505.10 : 871,466.84 = 345,019.04 : x
  2. Step 2: Convert to fraction form
    631,505.10/871,466.84 = 345,019.04/x
  3. Step 3: Cross multiply
    631,505.10x = 871,466.84 × 345,019.04
  4. Step 4: Simplify right side
    631,505.10x = 300,672,652,528.63
  5. Step 5: Solve for x
    x = 300,672,652,528.63/631,505.10
  6. Step 6: Final answer
    x = 476,120.70

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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.