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Finding the Fourth Proportional to 721,962.13, 994,082.39 and 641,249.41

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Solution

The fourth proportional to 721,962.13, 994,082.39 and 641,249.41 is: 882,947.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,962.13 : 994,082.39 = 641,249.41 : x
  2. Step 2: Convert to fraction form
    721,962.13/994,082.39 = 641,249.41/x
  3. Step 3: Cross multiply
    721,962.13x = 994,082.39 × 641,249.41
  4. Step 4: Simplify right side
    721,962.13x = 637,454,746,078.89
  5. Step 5: Solve for x
    x = 637,454,746,078.89/721,962.13
  6. Step 6: Final answer
    x = 882,947.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.