Home / 639,259,930.88-882,181,720.32-360,813,190.40

Finding the Fourth Proportional to 639,259,930.88, 882,181,720.32 and 360,813,190.40

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Solution

The fourth proportional to 639,259,930.88, 882,181,720.32 and 360,813,190.40 is: 497,923,904.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,259,930.88 : 882,181,720.32 = 360,813,190.40 : x
  2. Step 2: Convert to fraction form
    639,259,930.88/882,181,720.32 = 360,813,190.40/x
  3. Step 3: Cross multiply
    639,259,930.88x = 882,181,720.32 × 360,813,190.40
  4. Step 4: Simplify right side
    639,259,930.88x = 318,302,801,021,219,712
  5. Step 5: Solve for x
    x = 318,302,801,021,219,712/639,259,930.88
  6. Step 6: Final answer
    x = 497,923,904.89

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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.