Home / 861,795,417.30-1,292,874,701.62-279,484,257.38

Finding the Fourth Proportional to 861,795,417.30, 1,292,874,701.62 and 279,484,257.38

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Solution

The fourth proportional to 861,795,417.30, 1,292,874,701.62 and 279,484,257.38 is: 419,285,271.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,795,417.30 : 1,292,874,701.62 = 279,484,257.38 : x
  2. Step 2: Convert to fraction form
    861,795,417.30/1,292,874,701.62 = 279,484,257.38/x
  3. Step 3: Cross multiply
    861,795,417.30x = 1,292,874,701.62 × 279,484,257.38
  4. Step 4: Simplify right side
    861,795,417.30x = 361,338,125,868,301,632
  5. Step 5: Solve for x
    x = 361,338,125,868,301,632/861,795,417.30
  6. Step 6: Final answer
    x = 419,285,271.91

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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.