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Finding the Fourth Proportional to 571,673.80, 788,958.30 and 317,107

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Solution

The fourth proportional to 571,673.80, 788,958.30 and 317,107 is: 437,634.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,673.80 : 788,958.30 = 317,107 : x
  2. Step 2: Convert to fraction form
    571,673.80/788,958.30 = 317,107/x
  3. Step 3: Cross multiply
    571,673.80x = 788,958.30 × 317,107
  4. Step 4: Simplify right side
    571,673.80x = 250,184,199,638.10
  5. Step 5: Solve for x
    x = 250,184,199,638.10/571,673.80
  6. Step 6: Final answer
    x = 437,634.54

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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.