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Finding the Fourth Proportional to 571,697.80, 788,991.46 and 317,131

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Solution

The fourth proportional to 571,697.80, 788,991.46 and 317,131 is: 437,667.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,697.80 : 788,991.46 = 317,131 : x
  2. Step 2: Convert to fraction form
    571,697.80/788,991.46 = 317,131/x
  3. Step 3: Cross multiply
    571,697.80x = 788,991.46 × 317,131
  4. Step 4: Simplify right side
    571,697.80x = 250,213,650,701.26
  5. Step 5: Solve for x
    x = 250,213,650,701.26/571,697.80
  6. Step 6: Final answer
    x = 437,667.68

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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.