Home / 414,081,327.20-621,121,990.80-198,559,637.60

Finding the Fourth Proportional to 414,081,327.20, 621,121,990.80 and 198,559,637.60

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Solution

The fourth proportional to 414,081,327.20, 621,121,990.80 and 198,559,637.60 is: 297,839,456.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,081,327.20 : 621,121,990.80 = 198,559,637.60 : x
  2. Step 2: Convert to fraction form
    414,081,327.20/621,121,990.80 = 198,559,637.60/x
  3. Step 3: Cross multiply
    414,081,327.20x = 621,121,990.80 × 198,559,637.60
  4. Step 4: Simplify right side
    414,081,327.20x = 123,329,757,398,638,528
  5. Step 5: Solve for x
    x = 123,329,757,398,638,528/414,081,327.20
  6. Step 6: Final answer
    x = 297,839,456.40

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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.