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Finding the Fourth Proportional to 978,779.50, 1,468,704.40 and 379,764.30

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Solution

The fourth proportional to 978,779.50, 1,468,704.40 and 379,764.30 is: 569,854.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,779.50 : 1,468,704.40 = 379,764.30 : x
  2. Step 2: Convert to fraction form
    978,779.50/1,468,704.40 = 379,764.30/x
  3. Step 3: Cross multiply
    978,779.50x = 1,468,704.40 × 379,764.30
  4. Step 4: Simplify right side
    978,779.50x = 557,761,503,999.24
  5. Step 5: Solve for x
    x = 557,761,503,999.24/978,779.50
  6. Step 6: Final answer
    x = 569,854.09

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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.