Home / 861,795,418.30-1,292,874,703.12-279,484,258.38

Finding the Fourth Proportional to 861,795,418.30, 1,292,874,703.12 and 279,484,258.38

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Solution

The fourth proportional to 861,795,418.30, 1,292,874,703.12 and 279,484,258.38 is: 419,285,273.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,795,418.30 : 1,292,874,703.12 = 279,484,258.38 : x
  2. Step 2: Convert to fraction form
    861,795,418.30/1,292,874,703.12 = 279,484,258.38/x
  3. Step 3: Cross multiply
    861,795,418.30x = 1,292,874,703.12 × 279,484,258.38
  4. Step 4: Simplify right side
    861,795,418.30x = 361,338,127,579,755,840
  5. Step 5: Solve for x
    x = 361,338,127,579,755,840/861,795,418.30
  6. Step 6: Final answer
    x = 419,285,273.40

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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.