Home / 1,185,791.90-1,636,392.47-641,927.28

Finding the Fourth Proportional to 1,185,791.90, 1,636,392.47 and 641,927.28

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Solution

The fourth proportional to 1,185,791.90, 1,636,392.47 and 641,927.28 is: 885,859.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,791.90 : 1,636,392.47 = 641,927.28 : x
  2. Step 2: Convert to fraction form
    1,185,791.90/1,636,392.47 = 641,927.28/x
  3. Step 3: Cross multiply
    1,185,791.90x = 1,636,392.47 × 641,927.28
  4. Step 4: Simplify right side
    1,185,791.90x = 1,050,444,964,069.95
  5. Step 5: Solve for x
    x = 1,050,444,964,069.95/1,185,791.90
  6. Step 6: Final answer
    x = 885,859.46

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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.