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Finding the Fourth Proportional to 452,419.13, 678,628.13 and 115,459.79

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Solution

The fourth proportional to 452,419.13, 678,628.13 and 115,459.79 is: 173,189.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,419.13 : 678,628.13 = 115,459.79 : x
  2. Step 2: Convert to fraction form
    452,419.13/678,628.13 = 115,459.79/x
  3. Step 3: Cross multiply
    452,419.13x = 678,628.13 × 115,459.79
  4. Step 4: Simplify right side
    452,419.13x = 78,354,262,497.16
  5. Step 5: Solve for x
    x = 78,354,262,497.16/452,419.13
  6. Step 6: Final answer
    x = 173,189.54

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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.