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Finding the Fourth Proportional to 492,802.80, 739,204.20 and 439,658.70

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Solution

The fourth proportional to 492,802.80, 739,204.20 and 439,658.70 is: 659,488.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,802.80 : 739,204.20 = 439,658.70 : x
  2. Step 2: Convert to fraction form
    492,802.80/739,204.20 = 439,658.70/x
  3. Step 3: Cross multiply
    492,802.80x = 739,204.20 × 439,658.70
  4. Step 4: Simplify right side
    492,802.80x = 324,997,557,606.54
  5. Step 5: Solve for x
    x = 324,997,557,606.54/492,802.80
  6. Step 6: Final answer
    x = 659,488.05

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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.