Home / 694,540.80-1,041,811.20-339,782.40

Finding the Fourth Proportional to 694,540.80, 1,041,811.20 and 339,782.40

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Solution

The fourth proportional to 694,540.80, 1,041,811.20 and 339,782.40 is: 509,673.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,540.80 : 1,041,811.20 = 339,782.40 : x
  2. Step 2: Convert to fraction form
    694,540.80/1,041,811.20 = 339,782.40/x
  3. Step 3: Cross multiply
    694,540.80x = 1,041,811.20 × 339,782.40
  4. Step 4: Simplify right side
    694,540.80x = 353,989,109,882.88
  5. Step 5: Solve for x
    x = 353,989,109,882.88/694,540.80
  6. Step 6: Final answer
    x = 509,673.60

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Double scale
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Similar ratio
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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.