Home / 720,992.36-1,080,819.18-342,091.16

Finding the Fourth Proportional to 720,992.36, 1,080,819.18 and 342,091.16

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Solution

The fourth proportional to 720,992.36, 1,080,819.18 and 342,091.16 is: 512,819.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,992.36 : 1,080,819.18 = 342,091.16 : x
  2. Step 2: Convert to fraction form
    720,992.36/1,080,819.18 = 342,091.16/x
  3. Step 3: Cross multiply
    720,992.36x = 1,080,819.18 × 342,091.16
  4. Step 4: Simplify right side
    720,992.36x = 369,738,687,036.45
  5. Step 5: Solve for x
    x = 369,738,687,036.45/720,992.36
  6. Step 6: Final answer
    x = 512,819.15

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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.