Home / 398,606,788.80-597,910,183.20-214,940,779.20

Finding the Fourth Proportional to 398,606,788.80, 597,910,183.20 and 214,940,779.20

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Solution

The fourth proportional to 398,606,788.80, 597,910,183.20 and 214,940,779.20 is: 322,411,168.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,606,788.80 : 597,910,183.20 = 214,940,779.20 : x
  2. Step 2: Convert to fraction form
    398,606,788.80/597,910,183.20 = 214,940,779.20/x
  3. Step 3: Cross multiply
    398,606,788.80x = 597,910,183.20 × 214,940,779.20
  4. Step 4: Simplify right side
    398,606,788.80x = 128,515,280,668,622,752
  5. Step 5: Solve for x
    x = 128,515,280,668,622,752/398,606,788.80
  6. Step 6: Final answer
    x = 322,411,168.80

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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.