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Finding the Fourth Proportional to 426,960.25, 640,545.48 and 300,846.76

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Solution

The fourth proportional to 426,960.25, 640,545.48 and 300,846.76 is: 451,344.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,960.25 : 640,545.48 = 300,846.76 : x
  2. Step 2: Convert to fraction form
    426,960.25/640,545.48 = 300,846.76/x
  3. Step 3: Cross multiply
    426,960.25x = 640,545.48 × 300,846.76
  4. Step 4: Simplify right side
    426,960.25x = 192,706,030,689.28
  5. Step 5: Solve for x
    x = 192,706,030,689.28/426,960.25
  6. Step 6: Final answer
    x = 451,344.20

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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.