Home / 489,139,749.16-674,755,578.66-290,760,139.24

Finding the Fourth Proportional to 489,139,749.16, 674,755,578.66 and 290,760,139.24

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Solution

The fourth proportional to 489,139,749.16, 674,755,578.66 and 290,760,139.24 is: 401,096,059.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,139,749.16 : 674,755,578.66 = 290,760,139.24 : x
  2. Step 2: Convert to fraction form
    489,139,749.16/674,755,578.66 = 290,760,139.24/x
  3. Step 3: Cross multiply
    489,139,749.16x = 674,755,578.66 × 290,760,139.24
  4. Step 4: Simplify right side
    489,139,749.16x = 196,192,026,004,148,384
  5. Step 5: Solve for x
    x = 196,192,026,004,148,384/489,139,749.16
  6. Step 6: Final answer
    x = 401,096,059.65

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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.