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Finding the Fourth Proportional to 494,422.40, 741,925.20 and 326,428.40

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Solution

The fourth proportional to 494,422.40, 741,925.20 and 326,428.40 is: 489,835.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,422.40 : 741,925.20 = 326,428.40 : x
  2. Step 2: Convert to fraction form
    494,422.40/741,925.20 = 326,428.40/x
  3. Step 3: Cross multiply
    494,422.40x = 741,925.20 × 326,428.40
  4. Step 4: Simplify right side
    494,422.40x = 242,185,455,955.68
  5. Step 5: Solve for x
    x = 242,185,455,955.68/494,422.40
  6. Step 6: Final answer
    x = 489,835.12

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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.