Home / 1,388,080.90-1,915,538.52-776,226.66

Finding the Fourth Proportional to 1,388,080.90, 1,915,538.52 and 776,226.66

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Solution

The fourth proportional to 1,388,080.90, 1,915,538.52 and 776,226.66 is: 1,071,185.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,080.90 : 1,915,538.52 = 776,226.66 : x
  2. Step 2: Convert to fraction form
    1,388,080.90/1,915,538.52 = 776,226.66/x
  3. Step 3: Cross multiply
    1,388,080.90x = 1,915,538.52 × 776,226.66
  4. Step 4: Simplify right side
    1,388,080.90x = 1,486,892,067,480.94
  5. Step 5: Solve for x
    x = 1,486,892,067,480.94/1,388,080.90
  6. Step 6: Final answer
    x = 1,071,185.45

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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.