Home / 491,587.48-678,403.56-276,735.39

Finding the Fourth Proportional to 491,587.48, 678,403.56 and 276,735.39

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Solution

The fourth proportional to 491,587.48, 678,403.56 and 276,735.39 is: 381,902.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,587.48 : 678,403.56 = 276,735.39 : x
  2. Step 2: Convert to fraction form
    491,587.48/678,403.56 = 276,735.39/x
  3. Step 3: Cross multiply
    491,587.48x = 678,403.56 × 276,735.39
  4. Step 4: Simplify right side
    491,587.48x = 187,738,271,366.14
  5. Step 5: Solve for x
    x = 187,738,271,366.14/491,587.48
  6. Step 6: Final answer
    x = 381,902.06

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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.