Home / 490,527.27-676,506.10-318,275.50

Finding the Fourth Proportional to 490,527.27, 676,506.10 and 318,275.50

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Solution

The fourth proportional to 490,527.27, 676,506.10 and 318,275.50 is: 438,946.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,527.27 : 676,506.10 = 318,275.50 : x
  2. Step 2: Convert to fraction form
    490,527.27/676,506.10 = 318,275.50/x
  3. Step 3: Cross multiply
    490,527.27x = 676,506.10 × 318,275.50
  4. Step 4: Simplify right side
    490,527.27x = 215,315,317,230.55
  5. Step 5: Solve for x
    x = 215,315,317,230.55/490,527.27
  6. Step 6: Final answer
    x = 438,946.68

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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.