Home / 420,400,062.80-580,425,070.92-376,270,640.72

Finding the Fourth Proportional to 420,400,062.80, 580,425,070.92 and 376,270,640.72

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Solution

The fourth proportional to 420,400,062.80, 580,425,070.92 and 376,270,640.72 is: 519,497,813.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,400,062.80 : 580,425,070.92 = 376,270,640.72 : x
  2. Step 2: Convert to fraction form
    420,400,062.80/580,425,070.92 = 376,270,640.72/x
  3. Step 3: Cross multiply
    420,400,062.80x = 580,425,070.92 × 376,270,640.72
  4. Step 4: Simplify right side
    420,400,062.80x = 218,396,913,325,019,840
  5. Step 5: Solve for x
    x = 218,396,913,325,019,840/420,400,062.80
  6. Step 6: Final answer
    x = 519,497,813.27

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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.