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Finding the Fourth Proportional to 406,960.20, 610,440.30 and 361,859.40

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Solution

The fourth proportional to 406,960.20, 610,440.30 and 361,859.40 is: 542,789.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,960.20 : 610,440.30 = 361,859.40 : x
  2. Step 2: Convert to fraction form
    406,960.20/610,440.30 = 361,859.40/x
  3. Step 3: Cross multiply
    406,960.20x = 610,440.30 × 361,859.40
  4. Step 4: Simplify right side
    406,960.20x = 220,893,560,693.82
  5. Step 5: Solve for x
    x = 220,893,560,693.82/406,960.20
  6. Step 6: Final answer
    x = 542,789.10

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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.