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Finding the Fourth Proportional to 709,120.94, 978,744.69 and 450,945.56

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Solution

The fourth proportional to 709,120.94, 978,744.69 and 450,945.56 is: 622,405.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,120.94 : 978,744.69 = 450,945.56 : x
  2. Step 2: Convert to fraction form
    709,120.94/978,744.69 = 450,945.56/x
  3. Step 3: Cross multiply
    709,120.94x = 978,744.69 × 450,945.56
  4. Step 4: Simplify right side
    709,120.94x = 441,360,572,329.08
  5. Step 5: Solve for x
    x = 441,360,572,329.08/709,120.94
  6. Step 6: Final answer
    x = 622,405.22

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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.