Home / 680,519.80-1,020,779.70-348,743.80

Finding the Fourth Proportional to 680,519.80, 1,020,779.70 and 348,743.80

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Solution

The fourth proportional to 680,519.80, 1,020,779.70 and 348,743.80 is: 523,115.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,519.80 : 1,020,779.70 = 348,743.80 : x
  2. Step 2: Convert to fraction form
    680,519.80/1,020,779.70 = 348,743.80/x
  3. Step 3: Cross multiply
    680,519.80x = 1,020,779.70 × 348,743.80
  4. Step 4: Simplify right side
    680,519.80x = 355,990,591,540.86
  5. Step 5: Solve for x
    x = 355,990,591,540.86/680,519.80
  6. Step 6: Final answer
    x = 523,115.70

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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.