Home / 1,383,880.86-1,909,756.40-772,033.62

Finding the Fourth Proportional to 1,383,880.86, 1,909,756.40 and 772,033.62

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Solution

The fourth proportional to 1,383,880.86, 1,909,756.40 and 772,033.62 is: 1,065,406.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,880.86 : 1,909,756.40 = 772,033.62 : x
  2. Step 2: Convert to fraction form
    1,383,880.86/1,909,756.40 = 772,033.62/x
  3. Step 3: Cross multiply
    1,383,880.86x = 1,909,756.40 × 772,033.62
  4. Step 4: Simplify right side
    1,383,880.86x = 1,474,396,142,950
  5. Step 5: Solve for x
    x = 1,474,396,142,950/1,383,880.86
  6. Step 6: Final answer
    x = 1,065,406.85

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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.