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Finding the Fourth Proportional to 426,947.94, 640,526.99 and 300,834.49

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Solution

The fourth proportional to 426,947.94, 640,526.99 and 300,834.49 is: 451,325.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,947.94 : 640,526.99 = 300,834.49 : x
  2. Step 2: Convert to fraction form
    426,947.94/640,526.99 = 300,834.49/x
  3. Step 3: Cross multiply
    426,947.94x = 640,526.99 × 300,834.49
  4. Step 4: Simplify right side
    426,947.94x = 192,692,610,367.89
  5. Step 5: Solve for x
    x = 192,692,610,367.89/426,947.94
  6. Step 6: Final answer
    x = 451,325.78

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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.