Home / 515,398,382.48-711,243,789.12-280,444,994.88

Finding the Fourth Proportional to 515,398,382.48, 711,243,789.12 and 280,444,994.88

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Solution

The fourth proportional to 515,398,382.48, 711,243,789.12 and 280,444,994.88 is: 387,010,839.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,398,382.48 : 711,243,789.12 = 280,444,994.88 : x
  2. Step 2: Convert to fraction form
    515,398,382.48/711,243,789.12 = 280,444,994.88/x
  3. Step 3: Cross multiply
    515,398,382.48x = 711,243,789.12 × 280,444,994.88
  4. Step 4: Simplify right side
    515,398,382.48x = 199,464,760,798,190,208
  5. Step 5: Solve for x
    x = 199,464,760,798,190,208/515,398,382.48
  6. Step 6: Final answer
    x = 387,010,839.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.