Home / 1,328,016,838.40-1,992,025,257.60-1,309,876,985.60

Finding the Fourth Proportional to 1,328,016,838.40, 1,992,025,257.60 and 1,309,876,985.60

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Solution

The fourth proportional to 1,328,016,838.40, 1,992,025,257.60 and 1,309,876,985.60 is: 1,964,815,478.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,016,838.40 : 1,992,025,257.60 = 1,309,876,985.60 : x
  2. Step 2: Convert to fraction form
    1,328,016,838.40/1,992,025,257.60 = 1,309,876,985.60/x
  3. Step 3: Cross multiply
    1,328,016,838.40x = 1,992,025,257.60 × 1,309,876,985.60
  4. Step 4: Simplify right side
    1,328,016,838.40x = 2,609,308,039,664,151,040
  5. Step 5: Solve for x
    x = 2,609,308,039,664,151,040/1,328,016,838.40
  6. Step 6: Final answer
    x = 1,964,815,478.40

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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.