Home / 451,488.69-677,345.78-318,628.44

Finding the Fourth Proportional to 451,488.69, 677,345.78 and 318,628.44

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Solution

The fourth proportional to 451,488.69, 677,345.78 and 318,628.44 is: 478,022.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,488.69 : 677,345.78 = 318,628.44 : x
  2. Step 2: Convert to fraction form
    451,488.69/677,345.78 = 318,628.44/x
  3. Step 3: Cross multiply
    451,488.69x = 677,345.78 × 318,628.44
  4. Step 4: Simplify right side
    451,488.69x = 215,821,627,628.84
  5. Step 5: Solve for x
    x = 215,821,627,628.84/451,488.69
  6. Step 6: Final answer
    x = 478,022.22

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1.5x scale

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.