Home / 1,187,588,369.52-1,781,647,402.68-389,941,043.85

Finding the Fourth Proportional to 1,187,588,369.52, 1,781,647,402.68 and 389,941,043.85

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Solution

The fourth proportional to 1,187,588,369.52, 1,781,647,402.68 and 389,941,043.85 is: 584,998,527.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,588,369.52 : 1,781,647,402.68 = 389,941,043.85 : x
  2. Step 2: Convert to fraction form
    1,187,588,369.52/1,781,647,402.68 = 389,941,043.85/x
  3. Step 3: Cross multiply
    1,187,588,369.52x = 1,781,647,402.68 × 389,941,043.85
  4. Step 4: Simplify right side
    1,187,588,369.52x = 694,737,447,973,680,512
  5. Step 5: Solve for x
    x = 694,737,447,973,680,512/1,187,588,369.52
  6. Step 6: Final answer
    x = 584,998,527.94

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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.