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Finding the Fourth Proportional to 791,157.12, 1,091,800.12 and 428,580.94

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Solution

The fourth proportional to 791,157.12, 1,091,800.12 and 428,580.94 is: 591,443.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,157.12 : 1,091,800.12 = 428,580.94 : x
  2. Step 2: Convert to fraction form
    791,157.12/1,091,800.12 = 428,580.94/x
  3. Step 3: Cross multiply
    791,157.12x = 1,091,800.12 × 428,580.94
  4. Step 4: Simplify right side
    791,157.12x = 467,924,723,375.83
  5. Step 5: Solve for x
    x = 467,924,723,375.83/791,157.12
  6. Step 6: Final answer
    x = 591,443.48

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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.