Home / 405,811.11-608,710.49-139,573.94

Finding the Fourth Proportional to 405,811.11, 608,710.49 and 139,573.94

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Solution

The fourth proportional to 405,811.11, 608,710.49 and 139,573.94 is: 209,358.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,811.11 : 608,710.49 = 139,573.94 : x
  2. Step 2: Convert to fraction form
    405,811.11/608,710.49 = 139,573.94/x
  3. Step 3: Cross multiply
    405,811.11x = 608,710.49 × 139,573.94
  4. Step 4: Simplify right side
    405,811.11x = 84,960,118,975.71
  5. Step 5: Solve for x
    x = 84,960,118,975.71/405,811.11
  6. Step 6: Final answer
    x = 209,358.78

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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.