Home / 921,991.39-1,380,379.03-488,721.61

Finding the Fourth Proportional to 921,991.39, 1,380,379.03 and 488,721.61

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Solution

The fourth proportional to 921,991.39, 1,380,379.03 and 488,721.61 is: 731,699.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,991.39 : 1,380,379.03 = 488,721.61 : x
  2. Step 2: Convert to fraction form
    921,991.39/1,380,379.03 = 488,721.61/x
  3. Step 3: Cross multiply
    921,991.39x = 1,380,379.03 × 488,721.61
  4. Step 4: Simplify right side
    921,991.39x = 674,621,057,279.09
  5. Step 5: Solve for x
    x = 674,621,057,279.09/921,991.39
  6. Step 6: Final answer
    x = 731,699.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.