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Finding the Fourth Proportional to 710,910.85, 981,063.50 and 404,982.70

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Solution

The fourth proportional to 710,910.85, 981,063.50 and 404,982.70 is: 558,879.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,910.85 : 981,063.50 = 404,982.70 : x
  2. Step 2: Convert to fraction form
    710,910.85/981,063.50 = 404,982.70/x
  3. Step 3: Cross multiply
    710,910.85x = 981,063.50 × 404,982.70
  4. Step 4: Simplify right side
    710,910.85x = 397,313,745,101.45
  5. Step 5: Solve for x
    x = 397,313,745,101.45/710,910.85
  6. Step 6: Final answer
    x = 558,879.84

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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.