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Finding the Fourth Proportional to 457,126.70, 630,839.48 and 275,803.59

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Solution

The fourth proportional to 457,126.70, 630,839.48 and 275,803.59 is: 380,611.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,126.70 : 630,839.48 = 275,803.59 : x
  2. Step 2: Convert to fraction form
    457,126.70/630,839.48 = 275,803.59/x
  3. Step 3: Cross multiply
    457,126.70x = 630,839.48 × 275,803.59
  4. Step 4: Simplify right side
    457,126.70x = 173,987,793,987.24
  5. Step 5: Solve for x
    x = 173,987,793,987.24/457,126.70
  6. Step 6: Final answer
    x = 380,611.76

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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.