Home / 780,090.60-1,170,249.30-330,810.60

Finding the Fourth Proportional to 780,090.60, 1,170,249.30 and 330,810.60

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Solution

The fourth proportional to 780,090.60, 1,170,249.30 and 330,810.60 is: 496,263.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,090.60 : 1,170,249.30 = 330,810.60 : x
  2. Step 2: Convert to fraction form
    780,090.60/1,170,249.30 = 330,810.60/x
  3. Step 3: Cross multiply
    780,090.60x = 1,170,249.30 × 330,810.60
  4. Step 4: Simplify right side
    780,090.60x = 387,130,873,082.58
  5. Step 5: Solve for x
    x = 387,130,873,082.58/780,090.60
  6. Step 6: Final answer
    x = 496,263.99

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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.