Home / 490,528.27-676,507.48-318,276.50

Finding the Fourth Proportional to 490,528.27, 676,507.48 and 318,276.50

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Solution

The fourth proportional to 490,528.27, 676,507.48 and 318,276.50 is: 438,948.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,528.27 : 676,507.48 = 318,276.50 : x
  2. Step 2: Convert to fraction form
    490,528.27/676,507.48 = 318,276.50/x
  3. Step 3: Cross multiply
    490,528.27x = 676,507.48 × 318,276.50
  4. Step 4: Simplify right side
    490,528.27x = 215,316,432,958.22
  5. Step 5: Solve for x
    x = 215,316,432,958.22/490,528.27
  6. Step 6: Final answer
    x = 438,948.06

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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.