Home / 686,829.60-1,028,276.10-667,146.60

Finding the Fourth Proportional to 686,829.60, 1,028,276.10 and 667,146.60

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Solution

The fourth proportional to 686,829.60, 1,028,276.10 and 667,146.60 is: 998,808.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,829.60 : 1,028,276.10 = 667,146.60 : x
  2. Step 2: Convert to fraction form
    686,829.60/1,028,276.10 = 667,146.60/x
  3. Step 3: Cross multiply
    686,829.60x = 1,028,276.10 × 667,146.60
  4. Step 4: Simplify right side
    686,829.60x = 686,010,903,976.26
  5. Step 5: Solve for x
    x = 686,010,903,976.26/686,829.60
  6. Step 6: Final answer
    x = 998,808.01

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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.