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Finding the Fourth Proportional to 813,243.52, 1,122,321 and 450,659.80

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Solution

The fourth proportional to 813,243.52, 1,122,321 and 450,659.80 is: 621,935.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,243.52 : 1,122,321 = 450,659.80 : x
  2. Step 2: Convert to fraction form
    813,243.52/1,122,321 = 450,659.80/x
  3. Step 3: Cross multiply
    813,243.52x = 1,122,321 × 450,659.80
  4. Step 4: Simplify right side
    813,243.52x = 505,784,957,395.80
  5. Step 5: Solve for x
    x = 505,784,957,395.80/813,243.52
  6. Step 6: Final answer
    x = 621,935.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.