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Finding the Fourth Proportional to 610,994.45, 916,221.03 and 326,616.11

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Solution

The fourth proportional to 610,994.45, 916,221.03 and 326,616.11 is: 489,779.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,994.45 : 916,221.03 = 326,616.11 : x
  2. Step 2: Convert to fraction form
    610,994.45/916,221.03 = 326,616.11/x
  3. Step 3: Cross multiply
    610,994.45x = 916,221.03 × 326,616.11
  4. Step 4: Simplify right side
    610,994.45x = 299,252,544,137.69
  5. Step 5: Solve for x
    x = 299,252,544,137.69/610,994.45
  6. Step 6: Final answer
    x = 489,779.48

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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.