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Finding the Fourth Proportional to 631,525.74, 871,518.06 and 345,063.57

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Solution

The fourth proportional to 631,525.74, 871,518.06 and 345,063.57 is: 476,194.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,525.74 : 871,518.06 = 345,063.57 : x
  2. Step 2: Convert to fraction form
    631,525.74/871,518.06 = 345,063.57/x
  3. Step 3: Cross multiply
    631,525.74x = 871,518.06 × 345,063.57
  4. Step 4: Simplify right side
    631,525.74x = 300,729,133,103.07
  5. Step 5: Solve for x
    x = 300,729,133,103.07/631,525.74
  6. Step 6: Final answer
    x = 476,194.58

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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.