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Finding the Fourth Proportional to 537,120.40, 804,989.40 and 411,840.40

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Solution

The fourth proportional to 537,120.40, 804,989.40 and 411,840.40 is: 617,230.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,120.40 : 804,989.40 = 411,840.40 : x
  2. Step 2: Convert to fraction form
    537,120.40/804,989.40 = 411,840.40/x
  3. Step 3: Cross multiply
    537,120.40x = 804,989.40 × 411,840.40
  4. Step 4: Simplify right side
    537,120.40x = 331,527,156,491.76
  5. Step 5: Solve for x
    x = 331,527,156,491.76/537,120.40
  6. Step 6: Final answer
    x = 617,230.62

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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.