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Finding the Fourth Proportional to 576,978.32, 864,693.86 and 449,049.08

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Solution

The fourth proportional to 576,978.32, 864,693.86 and 449,049.08 is: 672,971.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,978.32 : 864,693.86 = 449,049.08 : x
  2. Step 2: Convert to fraction form
    576,978.32/864,693.86 = 449,049.08/x
  3. Step 3: Cross multiply
    576,978.32x = 864,693.86 × 449,049.08
  4. Step 4: Simplify right side
    576,978.32x = 388,289,982,314.65
  5. Step 5: Solve for x
    x = 388,289,982,314.65/576,978.32
  6. Step 6: Final answer
    x = 672,971.53

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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.