Home / 3,178,669.60-4,768,004.40-782,495.20

Finding the Fourth Proportional to 3,178,669.60, 4,768,004.40 and 782,495.20

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Solution

The fourth proportional to 3,178,669.60, 4,768,004.40 and 782,495.20 is: 1,173,742.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178,669.60 : 4,768,004.40 = 782,495.20 : x
  2. Step 2: Convert to fraction form
    3,178,669.60/4,768,004.40 = 782,495.20/x
  3. Step 3: Cross multiply
    3,178,669.60x = 4,768,004.40 × 782,495.20
  4. Step 4: Simplify right side
    3,178,669.60x = 3,730,940,556,578.88
  5. Step 5: Solve for x
    x = 3,730,940,556,578.88/3,178,669.60
  6. Step 6: Final answer
    x = 1,173,742.80

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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.