Home / 654,155,989.34-981,423,971.42-211,489,217.64

Finding the Fourth Proportional to 654,155,989.34, 981,423,971.42 and 211,489,217.64

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Solution

The fourth proportional to 654,155,989.34, 981,423,971.42 and 211,489,217.64 is: 317,295,249.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,155,989.34 : 981,423,971.42 = 211,489,217.64 : x
  2. Step 2: Convert to fraction form
    654,155,989.34/981,423,971.42 = 211,489,217.64/x
  3. Step 3: Cross multiply
    654,155,989.34x = 981,423,971.42 × 211,489,217.64
  4. Step 4: Simplify right side
    654,155,989.34x = 207,560,587,887,700,064
  5. Step 5: Solve for x
    x = 207,560,587,887,700,064/654,155,989.34
  6. Step 6: Final answer
    x = 317,295,249.56

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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.