Home / 800,415,584.76-1,103,696,370.52-521,439,765.24

Finding the Fourth Proportional to 800,415,584.76, 1,103,696,370.52 and 521,439,765.24

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Solution

The fourth proportional to 800,415,584.76, 1,103,696,370.52 and 521,439,765.24 is: 719,015,455.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,415,584.76 : 1,103,696,370.52 = 521,439,765.24 : x
  2. Step 2: Convert to fraction form
    800,415,584.76/1,103,696,370.52 = 521,439,765.24/x
  3. Step 3: Cross multiply
    800,415,584.76x = 1,103,696,370.52 × 521,439,765.24
  4. Step 4: Simplify right side
    800,415,584.76x = 575,511,176,340,188,864
  5. Step 5: Solve for x
    x = 575,511,176,340,188,864/800,415,584.76
  6. Step 6: Final answer
    x = 719,015,455.59

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.