Home / 521,471,833.38-781,721,473.32-176,183,986.86

Finding the Fourth Proportional to 521,471,833.38, 781,721,473.32 and 176,183,986.86

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Solution

The fourth proportional to 521,471,833.38, 781,721,473.32 and 176,183,986.86 is: 264,111,687.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,471,833.38 : 781,721,473.32 = 176,183,986.86 : x
  2. Step 2: Convert to fraction form
    521,471,833.38/781,721,473.32 = 176,183,986.86/x
  3. Step 3: Cross multiply
    521,471,833.38x = 781,721,473.32 × 176,183,986.86
  4. Step 4: Simplify right side
    521,471,833.38x = 137,726,805,783,590,736
  5. Step 5: Solve for x
    x = 137,726,805,783,590,736/521,471,833.38
  6. Step 6: Final answer
    x = 264,111,687.28

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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.