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Finding the Fourth Proportional to 631,679.04, 871,696.80 and 345,198.24

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Solution

The fourth proportional to 631,679.04, 871,696.80 and 345,198.24 is: 476,362.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,679.04 : 871,696.80 = 345,198.24 : x
  2. Step 2: Convert to fraction form
    631,679.04/871,696.80 = 345,198.24/x
  3. Step 3: Cross multiply
    631,679.04x = 871,696.80 × 345,198.24
  4. Step 4: Simplify right side
    631,679.04x = 300,908,201,173.63
  5. Step 5: Solve for x
    x = 300,908,201,173.63/631,679.04
  6. Step 6: Final answer
    x = 476,362.49

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1.5x scale

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.