Home / 1,185,776.31-1,636,369.47-641,911.96

Finding the Fourth Proportional to 1,185,776.31, 1,636,369.47 and 641,911.96

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Solution

The fourth proportional to 1,185,776.31, 1,636,369.47 and 641,911.96 is: 885,837.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,776.31 : 1,636,369.47 = 641,911.96 : x
  2. Step 2: Convert to fraction form
    1,185,776.31/1,636,369.47 = 641,911.96/x
  3. Step 3: Cross multiply
    1,185,776.31x = 1,636,369.47 × 641,911.96
  4. Step 4: Simplify right side
    1,185,776.31x = 1,050,405,133,771.86
  5. Step 5: Solve for x
    x = 1,050,405,133,771.86/1,185,776.31
  6. Step 6: Final answer
    x = 885,837.51

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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.