Home / 1,185,678.82-1,636,237.75-641,812.94

Finding the Fourth Proportional to 1,185,678.82, 1,636,237.75 and 641,812.94

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Solution

The fourth proportional to 1,185,678.82, 1,636,237.75 and 641,812.94 is: 885,702.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,678.82 : 1,636,237.75 = 641,812.94 : x
  2. Step 2: Convert to fraction form
    1,185,678.82/1,636,237.75 = 641,812.94/x
  3. Step 3: Cross multiply
    1,185,678.82x = 1,636,237.75 × 641,812.94
  4. Step 4: Simplify right side
    1,185,678.82x = 1,050,158,552,685.30
  5. Step 5: Solve for x
    x = 1,050,158,552,685.30/1,185,678.82
  6. Step 6: Final answer
    x = 885,702.38

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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.