Home / 1,420,380.18-1,960,114.68-775,800.54

Finding the Fourth Proportional to 1,420,380.18, 1,960,114.68 and 775,800.54

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Solution

The fourth proportional to 1,420,380.18, 1,960,114.68 and 775,800.54 is: 1,070,599.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,380.18 : 1,960,114.68 = 775,800.54 : x
  2. Step 2: Convert to fraction form
    1,420,380.18/1,960,114.68 = 775,800.54/x
  3. Step 3: Cross multiply
    1,420,380.18x = 1,960,114.68 × 775,800.54
  4. Step 4: Simplify right side
    1,420,380.18x = 1,520,658,027,205.93
  5. Step 5: Solve for x
    x = 1,520,658,027,205.93/1,420,380.18
  6. Step 6: Final answer
    x = 1,070,599.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.