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Finding the Fourth Proportional to 486,000.39, 670,679.56 and 271,127.64

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Solution

The fourth proportional to 486,000.39, 670,679.56 and 271,127.64 is: 374,155.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,000.39 : 670,679.56 = 271,127.64 : x
  2. Step 2: Convert to fraction form
    486,000.39/670,679.56 = 271,127.64/x
  3. Step 3: Cross multiply
    486,000.39x = 670,679.56 × 271,127.64
  4. Step 4: Simplify right side
    486,000.39x = 181,839,766,299.04
  5. Step 5: Solve for x
    x = 181,839,766,299.04/486,000.39
  6. Step 6: Final answer
    x = 374,155.60

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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.