Home / 345,739.40-518,609.10-324,744.20

Finding the Fourth Proportional to 345,739.40, 518,609.10 and 324,744.20

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Solution

The fourth proportional to 345,739.40, 518,609.10 and 324,744.20 is: 487,116.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,739.40 : 518,609.10 = 324,744.20 : x
  2. Step 2: Convert to fraction form
    345,739.40/518,609.10 = 324,744.20/x
  3. Step 3: Cross multiply
    345,739.40x = 518,609.10 × 324,744.20
  4. Step 4: Simplify right side
    345,739.40x = 168,415,297,292.22
  5. Step 5: Solve for x
    x = 168,415,297,292.22/345,739.40
  6. Step 6: Final answer
    x = 487,116.30

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1.5x scale

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.