Home / 863,054,266.80-1,294,707,371.40-280,689,409.20

Finding the Fourth Proportional to 863,054,266.80, 1,294,707,371.40 and 280,689,409.20

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Solution

The fourth proportional to 863,054,266.80, 1,294,707,371.40 and 280,689,409.20 is: 421,075,083.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,054,266.80 : 1,294,707,371.40 = 280,689,409.20 : x
  2. Step 2: Convert to fraction form
    863,054,266.80/1,294,707,371.40 = 280,689,409.20/x
  3. Step 3: Cross multiply
    863,054,266.80x = 1,294,707,371.40 × 280,689,409.20
  4. Step 4: Simplify right side
    863,054,266.80x = 363,410,647,165,150,976
  5. Step 5: Solve for x
    x = 363,410,647,165,150,976/863,054,266.80
  6. Step 6: Final answer
    x = 421,075,083.16

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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.