Home / 492,818.21-680,213.06-278,082.15

Finding the Fourth Proportional to 492,818.21, 680,213.06 and 278,082.15

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Solution

The fourth proportional to 492,818.21, 680,213.06 and 278,082.15 is: 383,823.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,818.21 : 680,213.06 = 278,082.15 : x
  2. Step 2: Convert to fraction form
    492,818.21/680,213.06 = 278,082.15/x
  3. Step 3: Cross multiply
    492,818.21x = 680,213.06 × 278,082.15
  4. Step 4: Simplify right side
    492,818.21x = 189,155,110,182.88
  5. Step 5: Solve for x
    x = 189,155,110,182.88/492,818.21
  6. Step 6: Final answer
    x = 383,823.30

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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.