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Finding the Fourth Proportional to 452,419.32, 678,628.41 and 115,459.98

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Solution

The fourth proportional to 452,419.32, 678,628.41 and 115,459.98 is: 173,189.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,419.32 : 678,628.41 = 115,459.98 : x
  2. Step 2: Convert to fraction form
    452,419.32/678,628.41 = 115,459.98/x
  3. Step 3: Cross multiply
    452,419.32x = 678,628.41 × 115,459.98
  4. Step 4: Simplify right side
    452,419.32x = 78,354,423,485.49
  5. Step 5: Solve for x
    x = 78,354,423,485.49/452,419.32
  6. Step 6: Final answer
    x = 173,189.82

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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.