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Finding the Fourth Proportional to 3,779,575.05, 5,669,384.13 and 939,687.21

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Solution

The fourth proportional to 3,779,575.05, 5,669,384.13 and 939,687.21 is: 1,409,536.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,779,575.05 : 5,669,384.13 = 939,687.21 : x
  2. Step 2: Convert to fraction form
    3,779,575.05/5,669,384.13 = 939,687.21/x
  3. Step 3: Cross multiply
    3,779,575.05x = 5,669,384.13 × 939,687.21
  4. Step 4: Simplify right side
    3,779,575.05x = 5,327,447,755,537.98
  5. Step 5: Solve for x
    x = 5,327,447,755,537.98/3,779,575.05
  6. Step 6: Final answer
    x = 1,409,536.17

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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.