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Finding the Fourth Proportional to 654,778.43, 980,342.80 and 334,240.78

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Solution

The fourth proportional to 654,778.43, 980,342.80 and 334,240.78 is: 500,429.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,778.43 : 980,342.80 = 334,240.78 : x
  2. Step 2: Convert to fraction form
    654,778.43/980,342.80 = 334,240.78/x
  3. Step 3: Cross multiply
    654,778.43x = 980,342.80 × 334,240.78
  4. Step 4: Simplify right side
    654,778.43x = 327,670,540,691.07
  5. Step 5: Solve for x
    x = 327,670,540,691.07/654,778.43
  6. Step 6: Final answer
    x = 500,429.65

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1.5x scale

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.