Home / 680,078.60-1,020,156.30-206,779.40

Finding the Fourth Proportional to 680,078.60, 1,020,156.30 and 206,779.40

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Solution

The fourth proportional to 680,078.60, 1,020,156.30 and 206,779.40 is: 310,180.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,078.60 : 1,020,156.30 = 206,779.40 : x
  2. Step 2: Convert to fraction form
    680,078.60/1,020,156.30 = 206,779.40/x
  3. Step 3: Cross multiply
    680,078.60x = 1,020,156.30 × 206,779.40
  4. Step 4: Simplify right side
    680,078.60x = 210,947,307,620.22
  5. Step 5: Solve for x
    x = 210,947,307,620.22/680,078.60
  6. Step 6: Final answer
    x = 310,180.78

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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.