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Finding the Fourth Proportional to 633,969.06, 874,967 and 392,329.46

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Solution

The fourth proportional to 633,969.06, 874,967 and 392,329.46 is: 541,470.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,969.06 : 874,967 = 392,329.46 : x
  2. Step 2: Convert to fraction form
    633,969.06/874,967 = 392,329.46/x
  3. Step 3: Cross multiply
    633,969.06x = 874,967 × 392,329.46
  4. Step 4: Simplify right side
    633,969.06x = 343,275,330,627.82
  5. Step 5: Solve for x
    x = 343,275,330,627.82/633,969.06
  6. Step 6: Final answer
    x = 541,470.16

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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.