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Finding the Fourth Proportional to 492,803.70, 739,205.55 and 427,849.80

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Solution

The fourth proportional to 492,803.70, 739,205.55 and 427,849.80 is: 641,774.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,803.70 : 739,205.55 = 427,849.80 : x
  2. Step 2: Convert to fraction form
    492,803.70/739,205.55 = 427,849.80/x
  3. Step 3: Cross multiply
    492,803.70x = 739,205.55 × 427,849.80
  4. Step 4: Simplify right side
    492,803.70x = 316,268,946,726.39
  5. Step 5: Solve for x
    x = 316,268,946,726.39/492,803.70
  6. Step 6: Final answer
    x = 641,774.70

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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.