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Finding the Fourth Proportional to 456,670.80, 629,789.44 and 392,119.88

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Solution

The fourth proportional to 456,670.80, 629,789.44 and 392,119.88 is: 540,768.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,670.80 : 629,789.44 = 392,119.88 : x
  2. Step 2: Convert to fraction form
    456,670.80/629,789.44 = 392,119.88/x
  3. Step 3: Cross multiply
    456,670.80x = 629,789.44 × 392,119.88
  4. Step 4: Simplify right side
    456,670.80x = 246,952,959,638.07
  5. Step 5: Solve for x
    x = 246,952,959,638.07/456,670.80
  6. Step 6: Final answer
    x = 540,768.01

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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.