Home / 621,106.89-857,157.92-349,260.36

Finding the Fourth Proportional to 621,106.89, 857,157.92 and 349,260.36

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Solution

The fourth proportional to 621,106.89, 857,157.92 and 349,260.36 is: 481,996.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,106.89 : 857,157.92 = 349,260.36 : x
  2. Step 2: Convert to fraction form
    621,106.89/857,157.92 = 349,260.36/x
  3. Step 3: Cross multiply
    621,106.89x = 857,157.92 × 349,260.36
  4. Step 4: Simplify right side
    621,106.89x = 299,371,283,716.05
  5. Step 5: Solve for x
    x = 299,371,283,716.05/621,106.89
  6. Step 6: Final answer
    x = 481,996.40

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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.