Home / 1,185,771.57-1,636,362.88-641,907.21

Finding the Fourth Proportional to 1,185,771.57, 1,636,362.88 and 641,907.21

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Solution

The fourth proportional to 1,185,771.57, 1,636,362.88 and 641,907.21 is: 885,830.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,771.57 : 1,636,362.88 = 641,907.21 : x
  2. Step 2: Convert to fraction form
    1,185,771.57/1,636,362.88 = 641,907.21/x
  3. Step 3: Cross multiply
    1,185,771.57x = 1,636,362.88 × 641,907.21
  4. Step 4: Simplify right side
    1,185,771.57x = 1,050,393,127,638.83
  5. Step 5: Solve for x
    x = 1,050,393,127,638.83/1,185,771.57
  6. Step 6: Final answer
    x = 885,830.93

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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.