Home / 420,396,392.76-580,135,782.11-232,220,636.61

Finding the Fourth Proportional to 420,396,392.76, 580,135,782.11 and 232,220,636.61

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Solution

The fourth proportional to 420,396,392.76, 580,135,782.11 and 232,220,636.61 is: 320,458,269.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,396,392.76 : 580,135,782.11 = 232,220,636.61 : x
  2. Step 2: Convert to fraction form
    420,396,392.76/580,135,782.11 = 232,220,636.61/x
  3. Step 3: Cross multiply
    420,396,392.76x = 580,135,782.11 × 232,220,636.61
  4. Step 4: Simplify right side
    420,396,392.76x = 134,719,500,641,534,176
  5. Step 5: Solve for x
    x = 134,719,500,641,534,176/420,396,392.76
  6. Step 6: Final answer
    x = 320,458,269.77

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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.