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Finding the Fourth Proportional to 664,315.80, 996,473.70 and 571,003.80

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Solution

The fourth proportional to 664,315.80, 996,473.70 and 571,003.80 is: 856,505.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,315.80 : 996,473.70 = 571,003.80 : x
  2. Step 2: Convert to fraction form
    664,315.80/996,473.70 = 571,003.80/x
  3. Step 3: Cross multiply
    664,315.80x = 996,473.70 × 571,003.80
  4. Step 4: Simplify right side
    664,315.80x = 568,990,269,300.06
  5. Step 5: Solve for x
    x = 568,990,269,300.06/664,315.80
  6. Step 6: Final answer
    x = 856,505.70

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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.