Home / 780,489.93-1,170,718.23-359,765.81

Finding the Fourth Proportional to 780,489.93, 1,170,718.23 and 359,765.81

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Solution

The fourth proportional to 780,489.93, 1,170,718.23 and 359,765.81 is: 539,641.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,489.93 : 1,170,718.23 = 359,765.81 : x
  2. Step 2: Convert to fraction form
    780,489.93/1,170,718.23 = 359,765.81/x
  3. Step 3: Cross multiply
    780,489.93x = 1,170,718.23 × 359,765.81
  4. Step 4: Simplify right side
    780,489.93x = 421,184,392,297.72
  5. Step 5: Solve for x
    x = 421,184,392,297.72/780,489.93
  6. Step 6: Final answer
    x = 539,641.03

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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.