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Finding the Fourth Proportional to 626,660.40, 938,608.20 and 376,906.80

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Solution

The fourth proportional to 626,660.40, 938,608.20 and 376,906.80 is: 564,528.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,660.40 : 938,608.20 = 376,906.80 : x
  2. Step 2: Convert to fraction form
    626,660.40/938,608.20 = 376,906.80/x
  3. Step 3: Cross multiply
    626,660.40x = 938,608.20 × 376,906.80
  4. Step 4: Simplify right side
    626,660.40x = 353,767,813,115.76
  5. Step 5: Solve for x
    x = 353,767,813,115.76/626,660.40
  6. Step 6: Final answer
    x = 564,528.75

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1.5x scale

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.