Home / 691,857.45-954,379.46-405,322.18

Finding the Fourth Proportional to 691,857.45, 954,379.46 and 405,322.18

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Solution

The fourth proportional to 691,857.45, 954,379.46 and 405,322.18 is: 559,119.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,857.45 : 954,379.46 = 405,322.18 : x
  2. Step 2: Convert to fraction form
    691,857.45/954,379.46 = 405,322.18/x
  3. Step 3: Cross multiply
    691,857.45x = 954,379.46 × 405,322.18
  4. Step 4: Simplify right side
    691,857.45x = 386,831,161,901.78
  5. Step 5: Solve for x
    x = 386,831,161,901.78/691,857.45
  6. Step 6: Final answer
    x = 559,119.75

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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.