Home / 391,067,999.60-586,601,999.40-209,669,471.60

Finding the Fourth Proportional to 391,067,999.60, 586,601,999.40 and 209,669,471.60

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Solution

The fourth proportional to 391,067,999.60, 586,601,999.40 and 209,669,471.60 is: 314,504,207.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,067,999.60 : 586,601,999.40 = 209,669,471.60 : x
  2. Step 2: Convert to fraction form
    391,067,999.60/586,601,999.40 = 209,669,471.60/x
  3. Step 3: Cross multiply
    391,067,999.60x = 586,601,999.40 × 209,669,471.60
  4. Step 4: Simplify right side
    391,067,999.60x = 122,992,531,253,701,504
  5. Step 5: Solve for x
    x = 122,992,531,253,701,504/391,067,999.60
  6. Step 6: Final answer
    x = 314,504,207.40

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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.