Home / 783,890.82-1,081,781.09-439,802.82

Finding the Fourth Proportional to 783,890.82, 1,081,781.09 and 439,802.82

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Solution

The fourth proportional to 783,890.82, 1,081,781.09 and 439,802.82 is: 606,934.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,890.82 : 1,081,781.09 = 439,802.82 : x
  2. Step 2: Convert to fraction form
    783,890.82/1,081,781.09 = 439,802.82/x
  3. Step 3: Cross multiply
    783,890.82x = 1,081,781.09 × 439,802.82
  4. Step 4: Simplify right side
    783,890.82x = 475,770,374,004.67
  5. Step 5: Solve for x
    x = 475,770,374,004.67/783,890.82
  6. Step 6: Final answer
    x = 606,934.49

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Double scale
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1.5x scale

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.