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Finding the Fourth Proportional to 384,605.40, 576,908.10 and 379,356.60

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Solution

The fourth proportional to 384,605.40, 576,908.10 and 379,356.60 is: 569,034.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,605.40 : 576,908.10 = 379,356.60 : x
  2. Step 2: Convert to fraction form
    384,605.40/576,908.10 = 379,356.60/x
  3. Step 3: Cross multiply
    384,605.40x = 576,908.10 × 379,356.60
  4. Step 4: Simplify right side
    384,605.40x = 218,853,895,328.46
  5. Step 5: Solve for x
    x = 218,853,895,328.46/384,605.40
  6. Step 6: Final answer
    x = 569,034.90

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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.