Home / 1,185,786.60-1,636,383.78-641,919.72

Finding the Fourth Proportional to 1,185,786.60, 1,636,383.78 and 641,919.72

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Solution

The fourth proportional to 1,185,786.60, 1,636,383.78 and 641,919.72 is: 885,848.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,786.60 : 1,636,383.78 = 641,919.72 : x
  2. Step 2: Convert to fraction form
    1,185,786.60/1,636,383.78 = 641,919.72/x
  3. Step 3: Cross multiply
    1,185,786.60x = 1,636,383.78 × 641,919.72
  4. Step 4: Simplify right side
    1,185,786.60x = 1,050,427,017,870.14
  5. Step 5: Solve for x
    x = 1,050,427,017,870.14/1,185,786.60
  6. Step 6: Final answer
    x = 885,848.28

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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.