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Finding the Fourth Proportional to 412,566.72, 618,059.52 and 279,216.96

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Solution

The fourth proportional to 412,566.72, 618,059.52 and 279,216.96 is: 418,290.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,566.72 : 618,059.52 = 279,216.96 : x
  2. Step 2: Convert to fraction form
    412,566.72/618,059.52 = 279,216.96/x
  3. Step 3: Cross multiply
    412,566.72x = 618,059.52 × 279,216.96
  4. Step 4: Simplify right side
    412,566.72x = 172,572,700,273.46
  5. Step 5: Solve for x
    x = 172,572,700,273.46/412,566.72
  6. Step 6: Final answer
    x = 418,290.40

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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.