Home / 1,328,612,752.60-1,993,485,999.30-638,164,605.40

Finding the Fourth Proportional to 1,328,612,752.60, 1,993,485,999.30 and 638,164,605.40

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Solution

The fourth proportional to 1,328,612,752.60, 1,993,485,999.30 and 638,164,605.40 is: 957,519,189.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,612,752.60 : 1,993,485,999.30 = 638,164,605.40 : x
  2. Step 2: Convert to fraction form
    1,328,612,752.60/1,993,485,999.30 = 638,164,605.40/x
  3. Step 3: Cross multiply
    1,328,612,752.60x = 1,993,485,999.30 × 638,164,605.40
  4. Step 4: Simplify right side
    1,328,612,752.60x = 1,272,172,206,113,709,056
  5. Step 5: Solve for x
    x = 1,272,172,206,113,709,056/1,328,612,752.60
  6. Step 6: Final answer
    x = 957,519,189.56

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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.