Home / 6,384,343.20-9,576,514.80-3,990,890.40

Finding the Fourth Proportional to 6,384,343.20, 9,576,514.80 and 3,990,890.40

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Solution

The fourth proportional to 6,384,343.20, 9,576,514.80 and 3,990,890.40 is: 5,986,335.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,384,343.20 : 9,576,514.80 = 3,990,890.40 : x
  2. Step 2: Convert to fraction form
    6,384,343.20/9,576,514.80 = 3,990,890.40/x
  3. Step 3: Cross multiply
    6,384,343.20x = 9,576,514.80 × 3,990,890.40
  4. Step 4: Simplify right side
    6,384,343.20x = 38,218,820,980,777.92
  5. Step 5: Solve for x
    x = 38,218,820,980,777.92/6,384,343.20
  6. Step 6: Final answer
    x = 5,986,335.60

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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.