Home / 1,011,187,774.96-1,515,449,901.84-428,200,650.16

Finding the Fourth Proportional to 1,011,187,774.96, 1,515,449,901.84 and 428,200,650.16

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Solution

The fourth proportional to 1,011,187,774.96, 1,515,449,901.84 and 428,200,650.16 is: 641,737,023.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,011,187,774.96 : 1,515,449,901.84 = 428,200,650.16 : x
  2. Step 2: Convert to fraction form
    1,011,187,774.96/1,515,449,901.84 = 428,200,650.16/x
  3. Step 3: Cross multiply
    1,011,187,774.96x = 1,515,449,901.84 × 428,200,650.16
  4. Step 4: Simplify right side
    1,011,187,774.96x = 648,916,633,252,796,160
  5. Step 5: Solve for x
    x = 648,916,633,252,796,160/1,011,187,774.96
  6. Step 6: Final answer
    x = 641,737,023.85

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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.