Home / 1,131,190.98-1,561,054.14-621,897

Finding the Fourth Proportional to 1,131,190.98, 1,561,054.14 and 621,897

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Solution

The fourth proportional to 1,131,190.98, 1,561,054.14 and 621,897 is: 858,223.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,190.98 : 1,561,054.14 = 621,897 : x
  2. Step 2: Convert to fraction form
    1,131,190.98/1,561,054.14 = 621,897/x
  3. Step 3: Cross multiply
    1,131,190.98x = 1,561,054.14 × 621,897
  4. Step 4: Simplify right side
    1,131,190.98x = 970,814,886,503.58
  5. Step 5: Solve for x
    x = 970,814,886,503.58/1,131,190.98
  6. Step 6: Final answer
    x = 858,223.68

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Double scale
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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.