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Finding the Fourth Proportional to 492,729.10, 739,093.65 and 386,440.90

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Solution

The fourth proportional to 492,729.10, 739,093.65 and 386,440.90 is: 579,661.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,729.10 : 739,093.65 = 386,440.90 : x
  2. Step 2: Convert to fraction form
    492,729.10/739,093.65 = 386,440.90/x
  3. Step 3: Cross multiply
    492,729.10x = 739,093.65 × 386,440.90
  4. Step 4: Simplify right side
    492,729.10x = 285,616,015,290.29
  5. Step 5: Solve for x
    x = 285,616,015,290.29/492,729.10
  6. Step 6: Final answer
    x = 579,661.35

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Similar ratio
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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.