Home / 518,004.16-777,111.72-218,485.86

Finding the Fourth Proportional to 518,004.16, 777,111.72 and 218,485.86

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Solution

The fourth proportional to 518,004.16, 777,111.72 and 218,485.86 is: 327,773.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,004.16 : 777,111.72 = 218,485.86 : x
  2. Step 2: Convert to fraction form
    518,004.16/777,111.72 = 218,485.86/x
  3. Step 3: Cross multiply
    518,004.16x = 777,111.72 × 218,485.86
  4. Step 4: Simplify right side
    518,004.16x = 169,787,918,574.72
  5. Step 5: Solve for x
    x = 169,787,918,574.72/518,004.16
  6. Step 6: Final answer
    x = 327,773.27

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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.