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Finding the Fourth Proportional to 631,515.54, 946,634.90 and 271,920.90

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Solution

The fourth proportional to 631,515.54, 946,634.90 and 271,920.90 is: 407,606.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,515.54 : 946,634.90 = 271,920.90 : x
  2. Step 2: Convert to fraction form
    631,515.54/946,634.90 = 271,920.90/x
  3. Step 3: Cross multiply
    631,515.54x = 946,634.90 × 271,920.90
  4. Step 4: Simplify right side
    631,515.54x = 257,409,813,979.41
  5. Step 5: Solve for x
    x = 257,409,813,979.41/631,515.54
  6. Step 6: Final answer
    x = 407,606.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.