Home / 393,664,007.70-590,496,011.55-209,997,998.10

Finding the Fourth Proportional to 393,664,007.70, 590,496,011.55 and 209,997,998.10

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Solution

The fourth proportional to 393,664,007.70, 590,496,011.55 and 209,997,998.10 is: 314,996,997.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,664,007.70 : 590,496,011.55 = 209,997,998.10 : x
  2. Step 2: Convert to fraction form
    393,664,007.70/590,496,011.55 = 209,997,998.10/x
  3. Step 3: Cross multiply
    393,664,007.70x = 590,496,011.55 × 209,997,998.10
  4. Step 4: Simplify right side
    393,664,007.70x = 124,002,980,311,534,464
  5. Step 5: Solve for x
    x = 124,002,980,311,534,464/393,664,007.70
  6. Step 6: Final answer
    x = 314,996,997.15

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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.