Home / 1,388,853.39-1,916,692.13-776,969.66

Finding the Fourth Proportional to 1,388,853.39, 1,916,692.13 and 776,969.66

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Solution

The fourth proportional to 1,388,853.39, 1,916,692.13 and 776,969.66 is: 1,072,259.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,853.39 : 1,916,692.13 = 776,969.66 : x
  2. Step 2: Convert to fraction form
    1,388,853.39/1,916,692.13 = 776,969.66/x
  3. Step 3: Cross multiply
    1,388,853.39x = 1,916,692.13 × 776,969.66
  4. Step 4: Simplify right side
    1,388,853.39x = 1,489,211,632,570.78
  5. Step 5: Solve for x
    x = 1,489,211,632,570.78/1,388,853.39
  6. Step 6: Final answer
    x = 1,072,259.78

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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.