Home / 1,420,438.80-1,960,192.56-775,858.80

Finding the Fourth Proportional to 1,420,438.80, 1,960,192.56 and 775,858.80

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Solution

The fourth proportional to 1,420,438.80, 1,960,192.56 and 775,858.80 is: 1,070,678.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,438.80 : 1,960,192.56 = 775,858.80 : x
  2. Step 2: Convert to fraction form
    1,420,438.80/1,960,192.56 = 775,858.80/x
  3. Step 3: Cross multiply
    1,420,438.80x = 1,960,192.56 × 775,858.80
  4. Step 4: Simplify right side
    1,420,438.80x = 1,520,832,647,370.53
  5. Step 5: Solve for x
    x = 1,520,832,647,370.53/1,420,438.80
  6. Step 6: Final answer
    x = 1,070,678.05

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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.