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Finding the Fourth Proportional to 631,534.60, 871,516.23 and 345,056.86

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Solution

The fourth proportional to 631,534.60, 871,516.23 and 345,056.86 is: 476,177.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,534.60 : 871,516.23 = 345,056.86 : x
  2. Step 2: Convert to fraction form
    631,534.60/871,516.23 = 345,056.86/x
  3. Step 3: Cross multiply
    631,534.60x = 871,516.23 × 345,056.86
  4. Step 4: Simplify right side
    631,534.60x = 300,722,653,762.84
  5. Step 5: Solve for x
    x = 300,722,653,762.84/631,534.60
  6. Step 6: Final answer
    x = 476,177.64

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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.