Home / 451,488.40-677,345.35-318,628.15

Finding the Fourth Proportional to 451,488.40, 677,345.35 and 318,628.15

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Solution

The fourth proportional to 451,488.40, 677,345.35 and 318,628.15 is: 478,021.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,488.40 : 677,345.35 = 318,628.15 : x
  2. Step 2: Convert to fraction form
    451,488.40/677,345.35 = 318,628.15/x
  3. Step 3: Cross multiply
    451,488.40x = 677,345.35 × 318,628.15
  4. Step 4: Simplify right side
    451,488.40x = 215,821,295,781.60
  5. Step 5: Solve for x
    x = 215,821,295,781.60/451,488.40
  6. Step 6: Final answer
    x = 478,021.80

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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.