Home / 711,309,721.60-1,067,561,779.20-323,728,998.40

Finding the Fourth Proportional to 711,309,721.60, 1,067,561,779.20 and 323,728,998.40

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Solution

The fourth proportional to 711,309,721.60, 1,067,561,779.20 and 323,728,998.40 is: 485,865,291.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,309,721.60 : 1,067,561,779.20 = 323,728,998.40 : x
  2. Step 2: Convert to fraction form
    711,309,721.60/1,067,561,779.20 = 323,728,998.40/x
  3. Step 3: Cross multiply
    711,309,721.60x = 1,067,561,779.20 × 323,728,998.40
  4. Step 4: Simplify right side
    711,309,721.60x = 345,600,705,510,537,920
  5. Step 5: Solve for x
    x = 345,600,705,510,537,920/711,309,721.60
  6. Step 6: Final answer
    x = 485,865,291.89

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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.