Home / 681,071.47-1,021,608.50-639,454.03

Finding the Fourth Proportional to 681,071.47, 1,021,608.50 and 639,454.03

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Solution

The fourth proportional to 681,071.47, 1,021,608.50 and 639,454.03 is: 959,182.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,071.47 : 1,021,608.50 = 639,454.03 : x
  2. Step 2: Convert to fraction form
    681,071.47/1,021,608.50 = 639,454.03/x
  3. Step 3: Cross multiply
    681,071.47x = 1,021,608.50 × 639,454.03
  4. Step 4: Simplify right side
    681,071.47x = 653,271,672,539.57
  5. Step 5: Solve for x
    x = 653,271,672,539.57/681,071.47
  6. Step 6: Final answer
    x = 959,182.26

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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.