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Finding the Fourth Proportional to 518,789.25, 716,262.30 and 325,461.96

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Solution

The fourth proportional to 518,789.25, 716,262.30 and 325,461.96 is: 449,346.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,789.25 : 716,262.30 = 325,461.96 : x
  2. Step 2: Convert to fraction form
    518,789.25/716,262.30 = 325,461.96/x
  3. Step 3: Cross multiply
    518,789.25x = 716,262.30 × 325,461.96
  4. Step 4: Simplify right side
    518,789.25x = 233,116,132,032.11
  5. Step 5: Solve for x
    x = 233,116,132,032.11/518,789.25
  6. Step 6: Final answer
    x = 449,346.50

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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.