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Finding the Fourth Proportional to 999,842,629.20, 1,396,335,943.20 and 999,842,629.20

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Solution

The fourth proportional to 999,842,629.20, 1,396,335,943.20 and 999,842,629.20 is: 1,396,335,943.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,842,629.20 : 1,396,335,943.20 = 999,842,629.20 : x
  2. Step 2: Convert to fraction form
    999,842,629.20/1,396,335,943.20 = 999,842,629.20/x
  3. Step 3: Cross multiply
    999,842,629.20x = 1,396,335,943.20 × 999,842,629.20
  4. Step 4: Simplify right side
    999,842,629.20x = 1,396,116,200,695,549,952
  5. Step 5: Solve for x
    x = 1,396,116,200,695,549,952/999,842,629.20
  6. Step 6: Final answer
    x = 1,396,335,943.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.