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Finding the Fourth Proportional to 492,054.90, 737,621.55 and 385,379.70

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Solution

The fourth proportional to 492,054.90, 737,621.55 and 385,379.70 is: 577,708.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,054.90 : 737,621.55 = 385,379.70 : x
  2. Step 2: Convert to fraction form
    492,054.90/737,621.55 = 385,379.70/x
  3. Step 3: Cross multiply
    492,054.90x = 737,621.55 × 385,379.70
  4. Step 4: Simplify right side
    492,054.90x = 284,264,371,652.54
  5. Step 5: Solve for x
    x = 284,264,371,652.54/492,054.90
  6. Step 6: Final answer
    x = 577,708.65

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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.