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Finding the Fourth Proportional to 710,577.30, 980,584.79 and 388,279.97

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Solution

The fourth proportional to 710,577.30, 980,584.79 and 388,279.97 is: 535,819.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,577.30 : 980,584.79 = 388,279.97 : x
  2. Step 2: Convert to fraction form
    710,577.30/980,584.79 = 388,279.97/x
  3. Step 3: Cross multiply
    710,577.30x = 980,584.79 × 388,279.97
  4. Step 4: Simplify right side
    710,577.30x = 380,741,425,999.33
  5. Step 5: Solve for x
    x = 380,741,425,999.33/710,577.30
  6. Step 6: Final answer
    x = 535,819.86

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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.