Home / 686,556.42-1,028,493.90-326,214.48

Finding the Fourth Proportional to 686,556.42, 1,028,493.90 and 326,214.48

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Solution

The fourth proportional to 686,556.42, 1,028,493.90 and 326,214.48 is: 488,684.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,556.42 : 1,028,493.90 = 326,214.48 : x
  2. Step 2: Convert to fraction form
    686,556.42/1,028,493.90 = 326,214.48/x
  3. Step 3: Cross multiply
    686,556.42x = 1,028,493.90 × 326,214.48
  4. Step 4: Simplify right side
    686,556.42x = 335,509,602,771.67
  5. Step 5: Solve for x
    x = 335,509,602,771.67/686,556.42
  6. Step 6: Final answer
    x = 488,684.68

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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.