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Finding the Fourth Proportional to 631,394.67, 871,313.70 and 344,907.39

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Solution

The fourth proportional to 631,394.67, 871,313.70 and 344,907.39 is: 475,966.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,394.67 : 871,313.70 = 344,907.39 : x
  2. Step 2: Convert to fraction form
    631,394.67/871,313.70 = 344,907.39/x
  3. Step 3: Cross multiply
    631,394.67x = 871,313.70 × 344,907.39
  4. Step 4: Simplify right side
    631,394.67x = 300,522,534,138.24
  5. Step 5: Solve for x
    x = 300,522,534,138.24/631,394.67
  6. Step 6: Final answer
    x = 475,966.22

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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.