Home / 686,550.40-1,028,484.92-326,208.44

Finding the Fourth Proportional to 686,550.40, 1,028,484.92 and 326,208.44

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Solution

The fourth proportional to 686,550.40, 1,028,484.92 and 326,208.44 is: 488,675.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,550.40 : 1,028,484.92 = 326,208.44 : x
  2. Step 2: Convert to fraction form
    686,550.40/1,028,484.92 = 326,208.44/x
  3. Step 3: Cross multiply
    686,550.40x = 1,028,484.92 × 326,208.44
  4. Step 4: Simplify right side
    686,550.40x = 335,500,461,316.73
  5. Step 5: Solve for x
    x = 335,500,461,316.73/686,550.40
  6. Step 6: Final answer
    x = 488,675.65

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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.