Home / 381,666,222-526,721,884.62-287,414,081.19

Finding the Fourth Proportional to 381,666,222, 526,721,884.62 and 287,414,081.19

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Solution

The fourth proportional to 381,666,222, 526,721,884.62 and 287,414,081.19 is: 396,648,374.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,666,222 : 526,721,884.62 = 287,414,081.19 : x
  2. Step 2: Convert to fraction form
    381,666,222/526,721,884.62 = 287,414,081.19/x
  3. Step 3: Cross multiply
    381,666,222x = 526,721,884.62 × 287,414,081.19
  4. Step 4: Simplify right side
    381,666,222x = 151,387,286,510,722,496
  5. Step 5: Solve for x
    x = 151,387,286,510,722,496/381,666,222
  6. Step 6: Final answer
    x = 396,648,374.38

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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.