Home / 809,028,078.10-1,213,542,117.15-465,042,721.30

Finding the Fourth Proportional to 809,028,078.10, 1,213,542,117.15 and 465,042,721.30

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Solution

The fourth proportional to 809,028,078.10, 1,213,542,117.15 and 465,042,721.30 is: 697,564,081.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,028,078.10 : 1,213,542,117.15 = 465,042,721.30 : x
  2. Step 2: Convert to fraction form
    809,028,078.10/1,213,542,117.15 = 465,042,721.30/x
  3. Step 3: Cross multiply
    809,028,078.10x = 1,213,542,117.15 × 465,042,721.30
  4. Step 4: Simplify right side
    809,028,078.10x = 564,348,928,571,599,488
  5. Step 5: Solve for x
    x = 564,348,928,571,599,488/809,028,078.10
  6. Step 6: Final answer
    x = 697,564,081.95

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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.