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Finding the Fourth Proportional to 612,224.80, 916,522.80 and 455,149.60

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Solution

The fourth proportional to 612,224.80, 916,522.80 and 455,149.60 is: 681,375.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,224.80 : 916,522.80 = 455,149.60 : x
  2. Step 2: Convert to fraction form
    612,224.80/916,522.80 = 455,149.60/x
  3. Step 3: Cross multiply
    612,224.80x = 916,522.80 × 455,149.60
  4. Step 4: Simplify right side
    612,224.80x = 417,154,985,810.88
  5. Step 5: Solve for x
    x = 417,154,985,810.88/612,224.80
  6. Step 6: Final answer
    x = 681,375.51

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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.