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Finding the Fourth Proportional to 629,910.80, 944,866.20 and 620,579.60

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Solution

The fourth proportional to 629,910.80, 944,866.20 and 620,579.60 is: 930,869.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,910.80 : 944,866.20 = 620,579.60 : x
  2. Step 2: Convert to fraction form
    629,910.80/944,866.20 = 620,579.60/x
  3. Step 3: Cross multiply
    629,910.80x = 944,866.20 × 620,579.60
  4. Step 4: Simplify right side
    629,910.80x = 586,364,688,449.52
  5. Step 5: Solve for x
    x = 586,364,688,449.52/629,910.80
  6. Step 6: Final answer
    x = 930,869.40

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Similar ratio
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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.