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Finding the Fourth Proportional to 631,763.96, 871,835.00 and 345,284.37

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Solution

The fourth proportional to 631,763.96, 871,835.00 and 345,284.37 is: 476,492.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,763.96 : 871,835.00 = 345,284.37 : x
  2. Step 2: Convert to fraction form
    631,763.96/871,835.00 = 345,284.37/x
  3. Step 3: Cross multiply
    631,763.96x = 871,835.00 × 345,284.37
  4. Step 4: Simplify right side
    631,763.96x = 301,030,996,992.53
  5. Step 5: Solve for x
    x = 301,030,996,992.53/631,763.96
  6. Step 6: Final answer
    x = 476,492.83

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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.