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Finding the Fourth Proportional to 518,785.94, 716,257.80 and 325,458.72

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Solution

The fourth proportional to 518,785.94, 716,257.80 and 325,458.72 is: 449,342.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,785.94 : 716,257.80 = 325,458.72 : x
  2. Step 2: Convert to fraction form
    518,785.94/716,257.80 = 325,458.72/x
  3. Step 3: Cross multiply
    518,785.94x = 716,257.80 × 325,458.72
  4. Step 4: Simplify right side
    518,785.94x = 233,112,346,778.02
  5. Step 5: Solve for x
    x = 233,112,346,778.02/518,785.94
  6. Step 6: Final answer
    x = 449,342.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.