Home / 489,212,578.16-674,856,086.98-290,832,979.31

Finding the Fourth Proportional to 489,212,578.16, 674,856,086.98 and 290,832,979.31

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Solution

The fourth proportional to 489,212,578.16, 674,856,086.98 and 290,832,979.31 is: 401,196,565.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,212,578.16 : 674,856,086.98 = 290,832,979.31 : x
  2. Step 2: Convert to fraction form
    489,212,578.16/674,856,086.98 = 290,832,979.31/x
  3. Step 3: Cross multiply
    489,212,578.16x = 674,856,086.98 × 290,832,979.31
  4. Step 4: Simplify right side
    489,212,578.16x = 196,270,406,380,857,984
  5. Step 5: Solve for x
    x = 196,270,406,380,857,984/489,212,578.16
  6. Step 6: Final answer
    x = 401,196,565.96

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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.