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Finding the Fourth Proportional to 605,423.40, 907,487.10 and 205,693.80

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Solution

The fourth proportional to 605,423.40, 907,487.10 and 205,693.80 is: 308,320.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,423.40 : 907,487.10 = 205,693.80 : x
  2. Step 2: Convert to fraction form
    605,423.40/907,487.10 = 205,693.80/x
  3. Step 3: Cross multiply
    605,423.40x = 907,487.10 × 205,693.80
  4. Step 4: Simplify right side
    605,423.40x = 186,664,470,049.98
  5. Step 5: Solve for x
    x = 186,664,470,049.98/605,423.40
  6. Step 6: Final answer
    x = 308,320.54

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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.