Home / 686,830.60-1,028,277.60-667,147.60

Finding the Fourth Proportional to 686,830.60, 1,028,277.60 and 667,147.60

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Solution

The fourth proportional to 686,830.60, 1,028,277.60 and 667,147.60 is: 998,809.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,830.60 : 1,028,277.60 = 667,147.60 : x
  2. Step 2: Convert to fraction form
    686,830.60/1,028,277.60 = 667,147.60/x
  3. Step 3: Cross multiply
    686,830.60x = 1,028,277.60 × 667,147.60
  4. Step 4: Simplify right side
    686,830.60x = 686,012,932,973.76
  5. Step 5: Solve for x
    x = 686,012,932,973.76/686,830.60
  6. Step 6: Final answer
    x = 998,809.51

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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.