Home / 639,030,786.65-881,795,305.22-371,054,236.58

Finding the Fourth Proportional to 639,030,786.65, 881,795,305.22 and 371,054,236.58

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Solution

The fourth proportional to 639,030,786.65, 881,795,305.22 and 371,054,236.58 is: 512,015,838.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,030,786.65 : 881,795,305.22 = 371,054,236.58 : x
  2. Step 2: Convert to fraction form
    639,030,786.65/881,795,305.22 = 371,054,236.58/x
  3. Step 3: Cross multiply
    639,030,786.65x = 881,795,305.22 × 371,054,236.58
  4. Step 4: Simplify right side
    639,030,786.65x = 327,193,883,791,970,944
  5. Step 5: Solve for x
    x = 327,193,883,791,970,944/639,030,786.65
  6. Step 6: Final answer
    x = 512,015,838.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.