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Finding the Fourth Proportional to 631,525.60, 871,495.16 and 345,039.54

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Solution

The fourth proportional to 631,525.60, 871,495.16 and 345,039.54 is: 476,149.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,525.60 : 871,495.16 = 345,039.54 : x
  2. Step 2: Convert to fraction form
    631,525.60/871,495.16 = 345,039.54/x
  3. Step 3: Cross multiply
    631,525.60x = 871,495.16 × 345,039.54
  4. Step 4: Simplify right side
    631,525.60x = 300,700,289,118.63
  5. Step 5: Solve for x
    x = 300,700,289,118.63/631,525.60
  6. Step 6: Final answer
    x = 476,149.01

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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.