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Finding the Fourth Proportional to 544,666.40, 815,055.60 and 345,082.40

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Solution

The fourth proportional to 544,666.40, 815,055.60 and 345,082.40 is: 516,391.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,666.40 : 815,055.60 = 345,082.40 : x
  2. Step 2: Convert to fraction form
    544,666.40/815,055.60 = 345,082.40/x
  3. Step 3: Cross multiply
    544,666.40x = 815,055.60 × 345,082.40
  4. Step 4: Simplify right side
    544,666.40x = 281,261,342,581.44
  5. Step 5: Solve for x
    x = 281,261,342,581.44/544,666.40
  6. Step 6: Final answer
    x = 516,391.95

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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.