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Finding the Fourth Proportional to 404,928.78, 607,395.33 and 265,569.90

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Solution

The fourth proportional to 404,928.78, 607,395.33 and 265,569.90 is: 398,356.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,928.78 : 607,395.33 = 265,569.90 : x
  2. Step 2: Convert to fraction form
    404,928.78/607,395.33 = 265,569.90/x
  3. Step 3: Cross multiply
    404,928.78x = 607,395.33 × 265,569.90
  4. Step 4: Simplify right side
    404,928.78x = 161,305,917,048.57
  5. Step 5: Solve for x
    x = 161,305,917,048.57/404,928.78
  6. Step 6: Final answer
    x = 398,356.27

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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.