Home / 858,391,231.70-1,287,586,847.55-313,150,553.30

Finding the Fourth Proportional to 858,391,231.70, 1,287,586,847.55 and 313,150,553.30

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Solution

The fourth proportional to 858,391,231.70, 1,287,586,847.55 and 313,150,553.30 is: 469,725,829.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,391,231.70 : 1,287,586,847.55 = 313,150,553.30 : x
  2. Step 2: Convert to fraction form
    858,391,231.70/1,287,586,847.55 = 313,150,553.30/x
  3. Step 3: Cross multiply
    858,391,231.70x = 1,287,586,847.55 × 313,150,553.30
  4. Step 4: Simplify right side
    858,391,231.70x = 403,208,533,732,085,248
  5. Step 5: Solve for x
    x = 403,208,533,732,085,248/858,391,231.70
  6. Step 6: Final answer
    x = 469,725,829.95

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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.