Home / 780,060.20-1,170,090.30-691,413.80

Finding the Fourth Proportional to 780,060.20, 1,170,090.30 and 691,413.80

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Solution

The fourth proportional to 780,060.20, 1,170,090.30 and 691,413.80 is: 1,037,120.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,060.20 : 1,170,090.30 = 691,413.80 : x
  2. Step 2: Convert to fraction form
    780,060.20/1,170,090.30 = 691,413.80/x
  3. Step 3: Cross multiply
    780,060.20x = 1,170,090.30 × 691,413.80
  4. Step 4: Simplify right side
    780,060.20x = 809,016,580,666.14
  5. Step 5: Solve for x
    x = 809,016,580,666.14/780,060.20
  6. Step 6: Final answer
    x = 1,037,120.70

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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.