Home / 7,801,821.60-11,702,732.40-4,778,512.80

Finding the Fourth Proportional to 7,801,821.60, 11,702,732.40 and 4,778,512.80

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Solution

The fourth proportional to 7,801,821.60, 11,702,732.40 and 4,778,512.80 is: 7,167,769.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,801,821.60 : 11,702,732.40 = 4,778,512.80 : x
  2. Step 2: Convert to fraction form
    7,801,821.60/11,702,732.40 = 4,778,512.80/x
  3. Step 3: Cross multiply
    7,801,821.60x = 11,702,732.40 × 4,778,512.80
  4. Step 4: Simplify right side
    7,801,821.60x = 55,921,656,568,374.72
  5. Step 5: Solve for x
    x = 55,921,656,568,374.72/7,801,821.60
  6. Step 6: Final answer
    x = 7,167,769.20

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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.