Home / 780,604.80-1,170,129.60-359,145.60

Finding the Fourth Proportional to 780,604.80, 1,170,129.60 and 359,145.60

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Solution

The fourth proportional to 780,604.80, 1,170,129.60 and 359,145.60 is: 538,360.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,604.80 : 1,170,129.60 = 359,145.60 : x
  2. Step 2: Convert to fraction form
    780,604.80/1,170,129.60 = 359,145.60/x
  3. Step 3: Cross multiply
    780,604.80x = 1,170,129.60 × 359,145.60
  4. Step 4: Simplify right side
    780,604.80x = 420,246,897,269.76
  5. Step 5: Solve for x
    x = 420,246,897,269.76/780,604.80
  6. Step 6: Final answer
    x = 538,360.64

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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.