Home / 686,006.09-1,028,610.26-259,574.85

Finding the Fourth Proportional to 686,006.09, 1,028,610.26 and 259,574.85

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Solution

The fourth proportional to 686,006.09, 1,028,610.26 and 259,574.85 is: 389,211.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,006.09 : 1,028,610.26 = 259,574.85 : x
  2. Step 2: Convert to fraction form
    686,006.09/1,028,610.26 = 259,574.85/x
  3. Step 3: Cross multiply
    686,006.09x = 1,028,610.26 × 259,574.85
  4. Step 4: Simplify right side
    686,006.09x = 267,001,356,038.84
  5. Step 5: Solve for x
    x = 267,001,356,038.84/686,006.09
  6. Step 6: Final answer
    x = 389,211.35

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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.