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Finding the Fourth Proportional to 628,703.63, 943,055.76 and 207,979.51

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Solution

The fourth proportional to 628,703.63, 943,055.76 and 207,979.51 is: 311,969.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,703.63 : 943,055.76 = 207,979.51 : x
  2. Step 2: Convert to fraction form
    628,703.63/943,055.76 = 207,979.51/x
  3. Step 3: Cross multiply
    628,703.63x = 943,055.76 × 207,979.51
  4. Step 4: Simplify right side
    628,703.63x = 196,136,269,112.30
  5. Step 5: Solve for x
    x = 196,136,269,112.30/628,703.63
  6. Step 6: Final answer
    x = 311,969.36

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Similar ratio
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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.