Home / 681,821.15-940,704.66-395,284.05

Finding the Fourth Proportional to 681,821.15, 940,704.66 and 395,284.05

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Solution

The fourth proportional to 681,821.15, 940,704.66 and 395,284.05 is: 545,371.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,821.15 : 940,704.66 = 395,284.05 : x
  2. Step 2: Convert to fraction form
    681,821.15/940,704.66 = 395,284.05/x
  3. Step 3: Cross multiply
    681,821.15x = 940,704.66 × 395,284.05
  4. Step 4: Simplify right side
    681,821.15x = 371,845,547,858.67
  5. Step 5: Solve for x
    x = 371,845,547,858.67/681,821.15
  6. Step 6: Final answer
    x = 545,371.10

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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.