Home / 455,628.78-683,187.21-189,210.06

Finding the Fourth Proportional to 455,628.78, 683,187.21 and 189,210.06

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Solution

The fourth proportional to 455,628.78, 683,187.21 and 189,210.06 is: 283,708.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,628.78 : 683,187.21 = 189,210.06 : x
  2. Step 2: Convert to fraction form
    455,628.78/683,187.21 = 189,210.06/x
  3. Step 3: Cross multiply
    455,628.78x = 683,187.21 × 189,210.06
  4. Step 4: Simplify right side
    455,628.78x = 129,265,892,995.33
  5. Step 5: Solve for x
    x = 129,265,892,995.33/455,628.78
  6. Step 6: Final answer
    x = 283,708.80

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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.