Home / 1,388,183.40-1,915,679.43-776,329.11

Finding the Fourth Proportional to 1,388,183.40, 1,915,679.43 and 776,329.11

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Solution

The fourth proportional to 1,388,183.40, 1,915,679.43 and 776,329.11 is: 1,071,326.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,183.40 : 1,915,679.43 = 776,329.11 : x
  2. Step 2: Convert to fraction form
    1,388,183.40/1,915,679.43 = 776,329.11/x
  3. Step 3: Cross multiply
    1,388,183.40x = 1,915,679.43 × 776,329.11
  4. Step 4: Simplify right side
    1,388,183.40x = 1,487,197,706,937.21
  5. Step 5: Solve for x
    x = 1,487,197,706,937.21/1,388,183.40
  6. Step 6: Final answer
    x = 1,071,326.53

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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.