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Finding the Fourth Proportional to 412,428.59, 618,689.62 and 370,048.29

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Solution

The fourth proportional to 412,428.59, 618,689.62 and 370,048.29 is: 555,114.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,428.59 : 618,689.62 = 370,048.29 : x
  2. Step 2: Convert to fraction form
    412,428.59/618,689.62 = 370,048.29/x
  3. Step 3: Cross multiply
    412,428.59x = 618,689.62 × 370,048.29
  4. Step 4: Simplify right side
    412,428.59x = 228,945,035,921.75
  5. Step 5: Solve for x
    x = 228,945,035,921.75/412,428.59
  6. Step 6: Final answer
    x = 555,114.37

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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.