Home / 405,727,710.76-608,882,140.38-172,721,785.64

Finding the Fourth Proportional to 405,727,710.76, 608,882,140.38 and 172,721,785.64

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Solution

The fourth proportional to 405,727,710.76, 608,882,140.38 and 172,721,785.64 is: 259,206,378.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,727,710.76 : 608,882,140.38 = 172,721,785.64 : x
  2. Step 2: Convert to fraction form
    405,727,710.76/608,882,140.38 = 172,721,785.64/x
  3. Step 3: Cross multiply
    405,727,710.76x = 608,882,140.38 × 172,721,785.64
  4. Step 4: Simplify right side
    405,727,710.76x = 105,167,210,530,738,736
  5. Step 5: Solve for x
    x = 105,167,210,530,738,736/405,727,710.76
  6. Step 6: Final answer
    x = 259,206,378.42

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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.