Home / 691,983.89-954,916.11-405,694.65

Finding the Fourth Proportional to 691,983.89, 954,916.11 and 405,694.65

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Solution

The fourth proportional to 691,983.89, 954,916.11 and 405,694.65 is: 559,845.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,983.89 : 954,916.11 = 405,694.65 : x
  2. Step 2: Convert to fraction form
    691,983.89/954,916.11 = 405,694.65/x
  3. Step 3: Cross multiply
    691,983.89x = 954,916.11 × 405,694.65
  4. Step 4: Simplify right side
    691,983.89x = 387,404,357,025.81
  5. Step 5: Solve for x
    x = 387,404,357,025.81/691,983.89
  6. Step 6: Final answer
    x = 559,845.92

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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.