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Finding the Fourth Proportional to 458,542.40, 687,813.60 and 369,968.90

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Solution

The fourth proportional to 458,542.40, 687,813.60 and 369,968.90 is: 554,953.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,542.40 : 687,813.60 = 369,968.90 : x
  2. Step 2: Convert to fraction form
    458,542.40/687,813.60 = 369,968.90/x
  3. Step 3: Cross multiply
    458,542.40x = 687,813.60 × 369,968.90
  4. Step 4: Simplify right side
    458,542.40x = 254,469,640,997.04
  5. Step 5: Solve for x
    x = 254,469,640,997.04/458,542.40
  6. Step 6: Final answer
    x = 554,953.35

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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.