Home / 645,135.30-967,374.90-378,977.40

Finding the Fourth Proportional to 645,135.30, 967,374.90 and 378,977.40

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Solution

The fourth proportional to 645,135.30, 967,374.90 and 378,977.40 is: 568,273.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,135.30 : 967,374.90 = 378,977.40 : x
  2. Step 2: Convert to fraction form
    645,135.30/967,374.90 = 378,977.40/x
  3. Step 3: Cross multiply
    645,135.30x = 967,374.90 × 378,977.40
  4. Step 4: Simplify right side
    645,135.30x = 366,613,224,427.26
  5. Step 5: Solve for x
    x = 366,613,224,427.26/645,135.30
  6. Step 6: Final answer
    x = 568,273.39

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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.