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Finding the Fourth Proportional to 485,412,419.60, 728,118,629.40 and 322,153,744.40

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Solution

The fourth proportional to 485,412,419.60, 728,118,629.40 and 322,153,744.40 is: 483,230,616.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,412,419.60 : 728,118,629.40 = 322,153,744.40 : x
  2. Step 2: Convert to fraction form
    485,412,419.60/728,118,629.40 = 322,153,744.40/x
  3. Step 3: Cross multiply
    485,412,419.60x = 728,118,629.40 × 322,153,744.40
  4. Step 4: Simplify right side
    485,412,419.60x = 234,566,142,828,605,888
  5. Step 5: Solve for x
    x = 234,566,142,828,605,888/485,412,419.60
  6. Step 6: Final answer
    x = 483,230,616.60

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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.