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Finding the Fourth Proportional to 631,507.08, 871,453.86 and 345,037

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Solution

The fourth proportional to 631,507.08, 871,453.86 and 345,037 is: 476,136.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,507.08 : 871,453.86 = 345,037 : x
  2. Step 2: Convert to fraction form
    631,507.08/871,453.86 = 345,037/x
  3. Step 3: Cross multiply
    631,507.08x = 871,453.86 × 345,037
  4. Step 4: Simplify right side
    631,507.08x = 300,683,825,492.82
  5. Step 5: Solve for x
    x = 300,683,825,492.82/631,507.08
  6. Step 6: Final answer
    x = 476,136.90

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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.