Home / 720,629.15-1,080,988.31-240,900.12

Finding the Fourth Proportional to 720,629.15, 1,080,988.31 and 240,900.12

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Solution

The fourth proportional to 720,629.15, 1,080,988.31 and 240,900.12 is: 361,365.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,629.15 : 1,080,988.31 = 240,900.12 : x
  2. Step 2: Convert to fraction form
    720,629.15/1,080,988.31 = 240,900.12/x
  3. Step 3: Cross multiply
    720,629.15x = 1,080,988.31 × 240,900.12
  4. Step 4: Simplify right side
    720,629.15x = 260,410,214,199.85
  5. Step 5: Solve for x
    x = 260,410,214,199.85/720,629.15
  6. Step 6: Final answer
    x = 361,365.09

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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.