Home / 494,007.32-681,721.20-279,142.76

Finding the Fourth Proportional to 494,007.32, 681,721.20 and 279,142.76

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Solution

The fourth proportional to 494,007.32, 681,721.20 and 279,142.76 is: 385,211.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,007.32 : 681,721.20 = 279,142.76 : x
  2. Step 2: Convert to fraction form
    494,007.32/681,721.20 = 279,142.76/x
  3. Step 3: Cross multiply
    494,007.32x = 681,721.20 × 279,142.76
  4. Step 4: Simplify right side
    494,007.32x = 190,297,533,909.91
  5. Step 5: Solve for x
    x = 190,297,533,909.91/494,007.32
  6. Step 6: Final answer
    x = 385,211.98

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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.