Home / 1,020,378.58-1,410,064.47-765,286.90

Finding the Fourth Proportional to 1,020,378.58, 1,410,064.47 and 765,286.90

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Solution

The fourth proportional to 1,020,378.58, 1,410,064.47 and 765,286.90 is: 1,057,552.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,378.58 : 1,410,064.47 = 765,286.90 : x
  2. Step 2: Convert to fraction form
    1,020,378.58/1,410,064.47 = 765,286.90/x
  3. Step 3: Cross multiply
    1,020,378.58x = 1,410,064.47 × 765,286.90
  4. Step 4: Simplify right side
    1,020,378.58x = 1,079,103,867,046.44
  5. Step 5: Solve for x
    x = 1,079,103,867,046.44/1,020,378.58
  6. Step 6: Final answer
    x = 1,057,552.45

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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.