Home / 904,902.69-1,355,286.78-431,920.20

Finding the Fourth Proportional to 904,902.69, 1,355,286.78 and 431,920.20

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Solution

The fourth proportional to 904,902.69, 1,355,286.78 and 431,920.20 is: 646,893.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    904,902.69 : 1,355,286.78 = 431,920.20 : x
  2. Step 2: Convert to fraction form
    904,902.69/1,355,286.78 = 431,920.20/x
  3. Step 3: Cross multiply
    904,902.69x = 1,355,286.78 × 431,920.20
  4. Step 4: Simplify right side
    904,902.69x = 585,375,737,074.96
  5. Step 5: Solve for x
    x = 585,375,737,074.96/904,902.69
  6. Step 6: Final answer
    x = 646,893.58

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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.