Home / 3,280,986.40-4,921,479.60-2,079,011.20

Finding the Fourth Proportional to 3,280,986.40, 4,921,479.60 and 2,079,011.20

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Solution

The fourth proportional to 3,280,986.40, 4,921,479.60 and 2,079,011.20 is: 3,118,516.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280,986.40 : 4,921,479.60 = 2,079,011.20 : x
  2. Step 2: Convert to fraction form
    3,280,986.40/4,921,479.60 = 2,079,011.20/x
  3. Step 3: Cross multiply
    3,280,986.40x = 4,921,479.60 × 2,079,011.20
  4. Step 4: Simplify right side
    3,280,986.40x = 10,231,811,208,971.52
  5. Step 5: Solve for x
    x = 10,231,811,208,971.52/3,280,986.40
  6. Step 6: Final answer
    x = 3,118,516.80

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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.