Home / 1,011,187,775.46-1,515,449,902.59-428,200,650.66

Finding the Fourth Proportional to 1,011,187,775.46, 1,515,449,902.59 and 428,200,650.66

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Solution

The fourth proportional to 1,011,187,775.46, 1,515,449,902.59 and 428,200,650.66 is: 641,737,024.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,011,187,775.46 : 1,515,449,902.59 = 428,200,650.66 : x
  2. Step 2: Convert to fraction form
    1,011,187,775.46/1,515,449,902.59 = 428,200,650.66/x
  3. Step 3: Cross multiply
    1,011,187,775.46x = 1,515,449,902.59 × 428,200,650.66
  4. Step 4: Simplify right side
    1,011,187,775.46x = 648,916,634,331,671,680
  5. Step 5: Solve for x
    x = 648,916,634,331,671,680/1,011,187,775.46
  6. Step 6: Final answer
    x = 641,737,024.60

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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.