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Finding the Fourth Proportional to 538,433.60, 743,028.82 and 293,420.55

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Solution

The fourth proportional to 538,433.60, 743,028.82 and 293,420.55 is: 404,915.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,433.60 : 743,028.82 = 293,420.55 : x
  2. Step 2: Convert to fraction form
    538,433.60/743,028.82 = 293,420.55/x
  3. Step 3: Cross multiply
    538,433.60x = 743,028.82 × 293,420.55
  4. Step 4: Simplify right side
    538,433.60x = 218,019,925,818.53
  5. Step 5: Solve for x
    x = 218,019,925,818.53/538,433.60
  6. Step 6: Final answer
    x = 404,915.15

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1.5x scale

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.