Home / 1,321,127,791.90-1,982,464,436.15-492,653,788.18

Finding the Fourth Proportional to 1,321,127,791.90, 1,982,464,436.15 and 492,653,788.18

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Solution

The fourth proportional to 1,321,127,791.90, 1,982,464,436.15 and 492,653,788.18 is: 739,268,843.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,127,791.90 : 1,982,464,436.15 = 492,653,788.18 : x
  2. Step 2: Convert to fraction form
    1,321,127,791.90/1,982,464,436.15 = 492,653,788.18/x
  3. Step 3: Cross multiply
    1,321,127,791.90x = 1,982,464,436.15 × 492,653,788.18
  4. Step 4: Simplify right side
    1,321,127,791.90x = 976,668,614,401,425,280
  5. Step 5: Solve for x
    x = 976,668,614,401,425,280/1,321,127,791.90
  6. Step 6: Final answer
    x = 739,268,843.17

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Double scale
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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.