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Finding the Fourth Proportional to 454,987.30, 682,480.95 and 445,145.80

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Solution

The fourth proportional to 454,987.30, 682,480.95 and 445,145.80 is: 667,718.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,987.30 : 682,480.95 = 445,145.80 : x
  2. Step 2: Convert to fraction form
    454,987.30/682,480.95 = 445,145.80/x
  3. Step 3: Cross multiply
    454,987.30x = 682,480.95 × 445,145.80
  4. Step 4: Simplify right side
    454,987.30x = 303,803,528,472.51
  5. Step 5: Solve for x
    x = 303,803,528,472.51/454,987.30
  6. Step 6: Final answer
    x = 667,718.70

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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.