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Finding the Fourth Proportional to 616,226.20, 849,937.26 and 389,653

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Solution

The fourth proportional to 616,226.20, 849,937.26 and 389,653 is: 537,433.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,226.20 : 849,937.26 = 389,653 : x
  2. Step 2: Convert to fraction form
    616,226.20/849,937.26 = 389,653/x
  3. Step 3: Cross multiply
    616,226.20x = 849,937.26 × 389,653
  4. Step 4: Simplify right side
    616,226.20x = 331,180,603,170.78
  5. Step 5: Solve for x
    x = 331,180,603,170.78/616,226.20
  6. Step 6: Final answer
    x = 537,433.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.