Home / 815,790,046.74-1,224,046,785.33-427,520,564.34

Finding the Fourth Proportional to 815,790,046.74, 1,224,046,785.33 and 427,520,564.34

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Solution

The fourth proportional to 815,790,046.74, 1,224,046,785.33 and 427,520,564.34 is: 641,470,405.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,790,046.74 : 1,224,046,785.33 = 427,520,564.34 : x
  2. Step 2: Convert to fraction form
    815,790,046.74/1,224,046,785.33 = 427,520,564.34/x
  3. Step 3: Cross multiply
    815,790,046.74x = 1,224,046,785.33 × 427,520,564.34
  4. Step 4: Simplify right side
    815,790,046.74x = 523,305,172,442,844,352
  5. Step 5: Solve for x
    x = 523,305,172,442,844,352/815,790,046.74
  6. Step 6: Final answer
    x = 641,470,405.94

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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.