Home / 686,018.60-1,028,628.96-259,587.35

Finding the Fourth Proportional to 686,018.60, 1,028,628.96 and 259,587.35

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Solution

The fourth proportional to 686,018.60, 1,028,628.96 and 259,587.35 is: 389,230.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,018.60 : 1,028,628.96 = 259,587.35 : x
  2. Step 2: Convert to fraction form
    686,018.60/1,028,628.96 = 259,587.35/x
  3. Step 3: Cross multiply
    686,018.60x = 1,028,628.96 × 259,587.35
  4. Step 4: Simplify right side
    686,018.60x = 267,019,060,716.51
  5. Step 5: Solve for x
    x = 267,019,060,716.51/686,018.60
  6. Step 6: Final answer
    x = 389,230.06

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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.