Home / 691,254.69-1,036,783.62-217,878.54

Finding the Fourth Proportional to 691,254.69, 1,036,783.62 and 217,878.54

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Solution

The fourth proportional to 691,254.69, 1,036,783.62 and 217,878.54 is: 326,786.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,254.69 : 1,036,783.62 = 217,878.54 : x
  2. Step 2: Convert to fraction form
    691,254.69/1,036,783.62 = 217,878.54/x
  3. Step 3: Cross multiply
    691,254.69x = 1,036,783.62 × 217,878.54
  4. Step 4: Simplify right side
    691,254.69x = 225,892,901,421.52
  5. Step 5: Solve for x
    x = 225,892,901,421.52/691,254.69
  6. Step 6: Final answer
    x = 326,786.79

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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.