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Finding the Fourth Proportional to 2,379,645, 3,568,126.10 and 781,779.06

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Solution

The fourth proportional to 2,379,645, 3,568,126.10 and 781,779.06 is: 1,172,227.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,379,645 : 3,568,126.10 = 781,779.06 : x
  2. Step 2: Convert to fraction form
    2,379,645/3,568,126.10 = 781,779.06/x
  3. Step 3: Cross multiply
    2,379,645x = 3,568,126.10 × 781,779.06
  4. Step 4: Simplify right side
    2,379,645x = 2,789,486,268,419.47
  5. Step 5: Solve for x
    x = 2,789,486,268,419.47/2,379,645
  6. Step 6: Final answer
    x = 1,172,227.90

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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.