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Finding the Fourth Proportional to 1,985,213.71, 2,977,820.84 and 489,305.71

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Solution

The fourth proportional to 1,985,213.71, 2,977,820.84 and 489,305.71 is: 733,958.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985,213.71 : 2,977,820.84 = 489,305.71 : x
  2. Step 2: Convert to fraction form
    1,985,213.71/2,977,820.84 = 489,305.71/x
  3. Step 3: Cross multiply
    1,985,213.71x = 2,977,820.84 × 489,305.71
  4. Step 4: Simplify right side
    1,985,213.71x = 1,457,064,740,369.00
  5. Step 5: Solve for x
    x = 1,457,064,740,369.00/1,985,213.71
  6. Step 6: Final answer
    x = 733,958.63

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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.