Home / 875,858.40-1,311,163.20-520,689.60

Finding the Fourth Proportional to 875,858.40, 1,311,163.20 and 520,689.60

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Solution

The fourth proportional to 875,858.40, 1,311,163.20 and 520,689.60 is: 779,474.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,858.40 : 1,311,163.20 = 520,689.60 : x
  2. Step 2: Convert to fraction form
    875,858.40/1,311,163.20 = 520,689.60/x
  3. Step 3: Cross multiply
    875,858.40x = 1,311,163.20 × 520,689.60
  4. Step 4: Simplify right side
    875,858.40x = 682,709,042,142.72
  5. Step 5: Solve for x
    x = 682,709,042,142.72/875,858.40
  6. Step 6: Final answer
    x = 779,474.22

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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.