Home / 681,823.07-940,915.53-391,453.36

Finding the Fourth Proportional to 681,823.07, 940,915.53 and 391,453.36

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Solution

The fourth proportional to 681,823.07, 940,915.53 and 391,453.36 is: 540,205.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,823.07 : 940,915.53 = 391,453.36 : x
  2. Step 2: Convert to fraction form
    681,823.07/940,915.53 = 391,453.36/x
  3. Step 3: Cross multiply
    681,823.07x = 940,915.53 × 391,453.36
  4. Step 4: Simplify right side
    681,823.07x = 368,324,539,032.84
  5. Step 5: Solve for x
    x = 368,324,539,032.84/681,823.07
  6. Step 6: Final answer
    x = 540,205.45

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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.