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Finding the Fourth Proportional to 709,456.06, 978,963.24 and 403,571.26

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Solution

The fourth proportional to 709,456.06, 978,963.24 and 403,571.26 is: 556,879.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,456.06 : 978,963.24 = 403,571.26 : x
  2. Step 2: Convert to fraction form
    709,456.06/978,963.24 = 403,571.26/x
  3. Step 3: Cross multiply
    709,456.06x = 978,963.24 × 403,571.26
  4. Step 4: Simplify right side
    709,456.06x = 395,081,428,260.48
  5. Step 5: Solve for x
    x = 395,081,428,260.48/709,456.06
  6. Step 6: Final answer
    x = 556,879.35

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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.