Home / 442,505,868.48-663,546,362.40-209,142,198.72

Finding the Fourth Proportional to 442,505,868.48, 663,546,362.40 and 209,142,198.72

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Solution

The fourth proportional to 442,505,868.48, 663,546,362.40 and 209,142,198.72 is: 313,612,892.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,505,868.48 : 663,546,362.40 = 209,142,198.72 : x
  2. Step 2: Convert to fraction form
    442,505,868.48/663,546,362.40 = 209,142,198.72/x
  3. Step 3: Cross multiply
    442,505,868.48x = 663,546,362.40 × 209,142,198.72
  4. Step 4: Simplify right side
    442,505,868.48x = 138,775,545,184,993,936
  5. Step 5: Solve for x
    x = 138,775,545,184,993,936/442,505,868.48
  6. Step 6: Final answer
    x = 313,612,892.10

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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.