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Finding the Fourth Proportional to 489,047.72, 674,653.44 and 325,780.11

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Solution

The fourth proportional to 489,047.72, 674,653.44 and 325,780.11 is: 449,421.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,047.72 : 674,653.44 = 325,780.11 : x
  2. Step 2: Convert to fraction form
    489,047.72/674,653.44 = 325,780.11/x
  3. Step 3: Cross multiply
    489,047.72x = 674,653.44 × 325,780.11
  4. Step 4: Simplify right side
    489,047.72x = 219,788,671,895.08
  5. Step 5: Solve for x
    x = 219,788,671,895.08/489,047.72
  6. Step 6: Final answer
    x = 449,421.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.