Home / 1,185,681.11-1,636,240.70-641,821.37

Finding the Fourth Proportional to 1,185,681.11, 1,636,240.70 and 641,821.37

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Solution

The fourth proportional to 1,185,681.11, 1,636,240.70 and 641,821.37 is: 885,713.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,681.11 : 1,636,240.70 = 641,821.37 : x
  2. Step 2: Convert to fraction form
    1,185,681.11/1,636,240.70 = 641,821.37/x
  3. Step 3: Cross multiply
    1,185,681.11x = 1,636,240.70 × 641,821.37
  4. Step 4: Simplify right side
    1,185,681.11x = 1,050,174,241,147.11
  5. Step 5: Solve for x
    x = 1,050,174,241,147.11/1,185,681.11
  6. Step 6: Final answer
    x = 885,713.90

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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.