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Finding the Fourth Proportional to 648,568,579.60, 973,823,634.92 and 561,400,445.80

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Solution

The fourth proportional to 648,568,579.60, 973,823,634.92 and 561,400,445.80 is: 842,940,962.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,568,579.60 : 973,823,634.92 = 561,400,445.80 : x
  2. Step 2: Convert to fraction form
    648,568,579.60/973,823,634.92 = 561,400,445.80/x
  3. Step 3: Cross multiply
    648,568,579.60x = 973,823,634.92 × 561,400,445.80
  4. Step 4: Simplify right side
    648,568,579.60x = 546,705,022,774,664,384
  5. Step 5: Solve for x
    x = 546,705,022,774,664,384/648,568,579.60
  6. Step 6: Final answer
    x = 842,940,962.56

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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.