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Finding the Fourth Proportional to 538,343.70, 807,515.55 and 328,391.70

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Solution

The fourth proportional to 538,343.70, 807,515.55 and 328,391.70 is: 492,587.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,343.70 : 807,515.55 = 328,391.70 : x
  2. Step 2: Convert to fraction form
    538,343.70/807,515.55 = 328,391.70/x
  3. Step 3: Cross multiply
    538,343.70x = 807,515.55 × 328,391.70
  4. Step 4: Simplify right side
    538,343.70x = 265,181,404,240.94
  5. Step 5: Solve for x
    x = 265,181,404,240.94/538,343.70
  6. Step 6: Final answer
    x = 492,587.55

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Similar ratio
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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.