Home / 485,515,212.40-728,272,818.60-445,338,272.80

Finding the Fourth Proportional to 485,515,212.40, 728,272,818.60 and 445,338,272.80

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Solution

The fourth proportional to 485,515,212.40, 728,272,818.60 and 445,338,272.80 is: 668,007,409.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,515,212.40 : 728,272,818.60 = 445,338,272.80 : x
  2. Step 2: Convert to fraction form
    485,515,212.40/728,272,818.60 = 445,338,272.80/x
  3. Step 3: Cross multiply
    485,515,212.40x = 728,272,818.60 × 445,338,272.80
  4. Step 4: Simplify right side
    485,515,212.40x = 324,327,759,162,511,744
  5. Step 5: Solve for x
    x = 324,327,759,162,511,744/485,515,212.40
  6. Step 6: Final answer
    x = 668,007,409.20

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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.