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Finding the Fourth Proportional to 610,994.20, 916,220.66 and 326,615.86

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Solution

The fourth proportional to 610,994.20, 916,220.66 and 326,615.86 is: 489,779.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,994.20 : 916,220.66 = 326,615.86 : x
  2. Step 2: Convert to fraction form
    610,994.20/916,220.66 = 326,615.86/x
  3. Step 3: Cross multiply
    610,994.20x = 916,220.66 × 326,615.86
  4. Step 4: Simplify right side
    610,994.20x = 299,252,198,815.67
  5. Step 5: Solve for x
    x = 299,252,198,815.67/610,994.20
  6. Step 6: Final answer
    x = 489,779.12

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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.