Home / 518,847.07-778,421.30-215,185.54

Finding the Fourth Proportional to 518,847.07, 778,421.30 and 215,185.54

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Solution

The fourth proportional to 518,847.07, 778,421.30 and 215,185.54 is: 322,840.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,847.07 : 778,421.30 = 215,185.54 : x
  2. Step 2: Convert to fraction form
    518,847.07/778,421.30 = 215,185.54/x
  3. Step 3: Cross multiply
    518,847.07x = 778,421.30 × 215,185.54
  4. Step 4: Simplify right side
    518,847.07x = 167,505,006,379.91
  5. Step 5: Solve for x
    x = 167,505,006,379.91/518,847.07
  6. Step 6: Final answer
    x = 322,840.81

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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.