Home / 491,181.12-677,869.20-276,308.40

Finding the Fourth Proportional to 491,181.12, 677,869.20 and 276,308.40

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Solution

The fourth proportional to 491,181.12, 677,869.20 and 276,308.40 is: 381,327.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,181.12 : 677,869.20 = 276,308.40 : x
  2. Step 2: Convert to fraction form
    491,181.12/677,869.20 = 276,308.40/x
  3. Step 3: Cross multiply
    491,181.12x = 677,869.20 × 276,308.40
  4. Step 4: Simplify right side
    491,181.12x = 187,300,954,061.28
  5. Step 5: Solve for x
    x = 187,300,954,061.28/491,181.12
  6. Step 6: Final answer
    x = 381,327.67

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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.