Home / 873,138,008.80-1,309,888,971.60-291,053,087.20

Finding the Fourth Proportional to 873,138,008.80, 1,309,888,971.60 and 291,053,087.20

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Solution

The fourth proportional to 873,138,008.80, 1,309,888,971.60 and 291,053,087.20 is: 436,640,285.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,138,008.80 : 1,309,888,971.60 = 291,053,087.20 : x
  2. Step 2: Convert to fraction form
    873,138,008.80/1,309,888,971.60 = 291,053,087.20/x
  3. Step 3: Cross multiply
    873,138,008.80x = 1,309,888,971.60 × 291,053,087.20
  4. Step 4: Simplify right side
    873,138,008.80x = 381,247,229,073,413,056
  5. Step 5: Solve for x
    x = 381,247,229,073,413,056/873,138,008.80
  6. Step 6: Final answer
    x = 436,640,285.08

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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.