Home / 460,916.40-689,992.20-405,620.40

Finding the Fourth Proportional to 460,916.40, 689,992.20 and 405,620.40

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Solution

The fourth proportional to 460,916.40, 689,992.20 and 405,620.40 is: 607,214.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,916.40 : 689,992.20 = 405,620.40 : x
  2. Step 2: Convert to fraction form
    460,916.40/689,992.20 = 405,620.40/x
  3. Step 3: Cross multiply
    460,916.40x = 689,992.20 × 405,620.40
  4. Step 4: Simplify right side
    460,916.40x = 279,874,912,160.88
  5. Step 5: Solve for x
    x = 279,874,912,160.88/460,916.40
  6. Step 6: Final answer
    x = 607,214.05

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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.