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Finding the Fourth Proportional to 709,753.25, 979,458.54 and 455,103.83

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Solution

The fourth proportional to 709,753.25, 979,458.54 and 455,103.83 is: 628,042.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,753.25 : 979,458.54 = 455,103.83 : x
  2. Step 2: Convert to fraction form
    709,753.25/979,458.54 = 455,103.83/x
  3. Step 3: Cross multiply
    709,753.25x = 979,458.54 × 455,103.83
  4. Step 4: Simplify right side
    709,753.25x = 445,755,332,880.21
  5. Step 5: Solve for x
    x = 445,755,332,880.21/709,753.25
  6. Step 6: Final answer
    x = 628,042.68

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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.