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Finding the Fourth Proportional to 631,740.96, 871,804.08 and 345,264.48

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Solution

The fourth proportional to 631,740.96, 871,804.08 and 345,264.48 is: 476,465.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,740.96 : 871,804.08 = 345,264.48 : x
  2. Step 2: Convert to fraction form
    631,740.96/871,804.08 = 345,264.48/x
  3. Step 3: Cross multiply
    631,740.96x = 871,804.08 × 345,264.48
  4. Step 4: Simplify right side
    631,740.96x = 301,002,982,343.08
  5. Step 5: Solve for x
    x = 301,002,982,343.08/631,740.96
  6. Step 6: Final answer
    x = 476,465.83

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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.