Home / 1,291,221,519,001.90-1,936,839,518,517.60-430,693,326,732.67

Finding the Fourth Proportional to 1,291,221,519,001.90, 1,936,839,518,517.60 and 430,693,326,732.67

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Solution

The fourth proportional to 1,291,221,519,001.90, 1,936,839,518,517.60 and 430,693,326,732.67 is: 646,042,405,041.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,221,519,001.90 : 1,936,839,518,517.60 = 430,693,326,732.67 : x
  2. Step 2: Convert to fraction form
    1,291,221,519,001.90/1,936,839,518,517.60 = 430,693,326,732.67/x
  3. Step 3: Cross multiply
    1,291,221,519,001.90x = 1,936,839,518,517.60 × 430,693,326,732.67
  4. Step 4: Simplify right side
    1,291,221,519,001.90x = 834,183,855,577,647,990,964,224
  5. Step 5: Solve for x
    x = 834,183,855,577,647,990,964,224/1,291,221,519,001.90
  6. Step 6: Final answer
    x = 646,042,405,041.75

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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.