Home / 3,178,693.60-4,768,040.40-782,519.20

Finding the Fourth Proportional to 3,178,693.60, 4,768,040.40 and 782,519.20

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Solution

The fourth proportional to 3,178,693.60, 4,768,040.40 and 782,519.20 is: 1,173,778.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178,693.60 : 4,768,040.40 = 782,519.20 : x
  2. Step 2: Convert to fraction form
    3,178,693.60/4,768,040.40 = 782,519.20/x
  3. Step 3: Cross multiply
    3,178,693.60x = 4,768,040.40 × 782,519.20
  4. Step 4: Simplify right side
    3,178,693.60x = 3,731,083,159,375.68
  5. Step 5: Solve for x
    x = 3,731,083,159,375.68/3,178,693.60
  6. Step 6: Final answer
    x = 1,173,778.80

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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.