Home / 1,328,063,428.20-1,992,095,142.30-407,938,290.60

Finding the Fourth Proportional to 1,328,063,428.20, 1,992,095,142.30 and 407,938,290.60

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Solution

The fourth proportional to 1,328,063,428.20, 1,992,095,142.30 and 407,938,290.60 is: 611,907,435.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,063,428.20 : 1,992,095,142.30 = 407,938,290.60 : x
  2. Step 2: Convert to fraction form
    1,328,063,428.20/1,992,095,142.30 = 407,938,290.60/x
  3. Step 3: Cross multiply
    1,328,063,428.20x = 1,992,095,142.30 × 407,938,290.60
  4. Step 4: Simplify right side
    1,328,063,428.20x = 812,651,887,062,425,728
  5. Step 5: Solve for x
    x = 812,651,887,062,425,728/1,328,063,428.20
  6. Step 6: Final answer
    x = 611,907,435.90

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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.