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Finding the Fourth Proportional to 544,671.40, 815,063.10 and 345,087.40

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Solution

The fourth proportional to 544,671.40, 815,063.10 and 345,087.40 is: 516,399.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,671.40 : 815,063.10 = 345,087.40 : x
  2. Step 2: Convert to fraction form
    544,671.40/815,063.10 = 345,087.40/x
  3. Step 3: Cross multiply
    544,671.40x = 815,063.10 × 345,087.40
  4. Step 4: Simplify right side
    544,671.40x = 281,268,006,014.94
  5. Step 5: Solve for x
    x = 281,268,006,014.94/544,671.40
  6. Step 6: Final answer
    x = 516,399.44

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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.