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Finding the Fourth Proportional to 664,605,259.60, 996,907,889.40 and 320,231,491.60

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Solution

The fourth proportional to 664,605,259.60, 996,907,889.40 and 320,231,491.60 is: 480,347,237.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,605,259.60 : 996,907,889.40 = 320,231,491.60 : x
  2. Step 2: Convert to fraction form
    664,605,259.60/996,907,889.40 = 320,231,491.60/x
  3. Step 3: Cross multiply
    664,605,259.60x = 996,907,889.40 × 320,231,491.60
  4. Step 4: Simplify right side
    664,605,259.60x = 319,241,300,410,369,856
  5. Step 5: Solve for x
    x = 319,241,300,410,369,856/664,605,259.60
  6. Step 6: Final answer
    x = 480,347,237.40

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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.