Home / 778,571.97-1,074,429.41-439,040.31

Finding the Fourth Proportional to 778,571.97, 1,074,429.41 and 439,040.31

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Solution

The fourth proportional to 778,571.97, 1,074,429.41 and 439,040.31 is: 605,875.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,571.97 : 1,074,429.41 = 439,040.31 : x
  2. Step 2: Convert to fraction form
    778,571.97/1,074,429.41 = 439,040.31/x
  3. Step 3: Cross multiply
    778,571.97x = 1,074,429.41 × 439,040.31
  4. Step 4: Simplify right side
    778,571.97x = 471,717,821,239.52
  5. Step 5: Solve for x
    x = 471,717,821,239.52/778,571.97
  6. Step 6: Final answer
    x = 605,875.68

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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.