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Finding the Fourth Proportional to 721,329.00, 995,463.32 and 399,033.54

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Solution

The fourth proportional to 721,329.00, 995,463.32 and 399,033.54 is: 550,682.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,329.00 : 995,463.32 = 399,033.54 : x
  2. Step 2: Convert to fraction form
    721,329.00/995,463.32 = 399,033.54/x
  3. Step 3: Cross multiply
    721,329.00x = 995,463.32 × 399,033.54
  4. Step 4: Simplify right side
    721,329.00x = 397,223,252,769.15
  5. Step 5: Solve for x
    x = 397,223,252,769.15/721,329.00
  6. Step 6: Final answer
    x = 550,682.50

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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.