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Finding the Fourth Proportional to 571,675.80, 788,961.06 and 317,109

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Solution

The fourth proportional to 571,675.80, 788,961.06 and 317,109 is: 437,637.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,675.80 : 788,961.06 = 317,109 : x
  2. Step 2: Convert to fraction form
    571,675.80/788,961.06 = 317,109/x
  3. Step 3: Cross multiply
    571,675.80x = 788,961.06 × 317,109
  4. Step 4: Simplify right side
    571,675.80x = 250,186,652,775.54
  5. Step 5: Solve for x
    x = 250,186,652,775.54/571,675.80
  6. Step 6: Final answer
    x = 437,637.30

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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.