Home / 860,203,287.20-1,290,304,930.80-285,774,615.20

Finding the Fourth Proportional to 860,203,287.20, 1,290,304,930.80 and 285,774,615.20

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Solution

The fourth proportional to 860,203,287.20, 1,290,304,930.80 and 285,774,615.20 is: 428,661,922.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,203,287.20 : 1,290,304,930.80 = 285,774,615.20 : x
  2. Step 2: Convert to fraction form
    860,203,287.20/1,290,304,930.80 = 285,774,615.20/x
  3. Step 3: Cross multiply
    860,203,287.20x = 1,290,304,930.80 × 285,774,615.20
  4. Step 4: Simplify right side
    860,203,287.20x = 368,736,395,090,032,576
  5. Step 5: Solve for x
    x = 368,736,395,090,032,576/860,203,287.20
  6. Step 6: Final answer
    x = 428,661,922.80

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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.