Home / 7,679,159.28-11,519,427.60-1,999,432.80

Finding the Fourth Proportional to 7,679,159.28, 11,519,427.60 and 1,999,432.80

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Solution

The fourth proportional to 7,679,159.28, 11,519,427.60 and 1,999,432.80 is: 2,999,328.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,679,159.28 : 11,519,427.60 = 1,999,432.80 : x
  2. Step 2: Convert to fraction form
    7,679,159.28/11,519,427.60 = 1,999,432.80/x
  3. Step 3: Cross multiply
    7,679,159.28x = 11,519,427.60 × 1,999,432.80
  4. Step 4: Simplify right side
    7,679,159.28x = 23,032,321,380,665.28
  5. Step 5: Solve for x
    x = 23,032,321,380,665.28/7,679,159.28
  6. Step 6: Final answer
    x = 2,999,328.51

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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.