Home / 929,909.40-1,394,680.38-255,816.78

Finding the Fourth Proportional to 929,909.40, 1,394,680.38 and 255,816.78

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Solution

The fourth proportional to 929,909.40, 1,394,680.38 and 255,816.78 is: 383,674.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    929,909.40 : 1,394,680.38 = 255,816.78 : x
  2. Step 2: Convert to fraction form
    929,909.40/1,394,680.38 = 255,816.78/x
  3. Step 3: Cross multiply
    929,909.40x = 1,394,680.38 × 255,816.78
  4. Step 4: Simplify right side
    929,909.40x = 356,782,643,940.78
  5. Step 5: Solve for x
    x = 356,782,643,940.78/929,909.40
  6. Step 6: Final answer
    x = 383,674.63

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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.