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Finding the Fourth Proportional to 654,968.72, 982,769.88 and 318,296.72

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Solution

The fourth proportional to 654,968.72, 982,769.88 and 318,296.72 is: 477,599.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,968.72 : 982,769.88 = 318,296.72 : x
  2. Step 2: Convert to fraction form
    654,968.72/982,769.88 = 318,296.72/x
  3. Step 3: Cross multiply
    654,968.72x = 982,769.88 × 318,296.72
  4. Step 4: Simplify right side
    654,968.72x = 312,812,429,318.79
  5. Step 5: Solve for x
    x = 312,812,429,318.79/654,968.72
  6. Step 6: Final answer
    x = 477,599.04

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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.