Home / 644,240.61-965,631.78-328,029.57

Finding the Fourth Proportional to 644,240.61, 965,631.78 and 328,029.57

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Solution

The fourth proportional to 644,240.61, 965,631.78 and 328,029.57 is: 491,673.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,240.61 : 965,631.78 = 328,029.57 : x
  2. Step 2: Convert to fraction form
    644,240.61/965,631.78 = 328,029.57/x
  3. Step 3: Cross multiply
    644,240.61x = 965,631.78 × 328,029.57
  4. Step 4: Simplify right side
    644,240.61x = 316,755,777,571.74
  5. Step 5: Solve for x
    x = 316,755,777,571.74/644,240.61
  6. Step 6: Final answer
    x = 491,673.10

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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.