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Finding the Fourth Proportional to 517,195.40, 775,793.10 and 479,870.60

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Solution

The fourth proportional to 517,195.40, 775,793.10 and 479,870.60 is: 719,805.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,195.40 : 775,793.10 = 479,870.60 : x
  2. Step 2: Convert to fraction form
    517,195.40/775,793.10 = 479,870.60/x
  3. Step 3: Cross multiply
    517,195.40x = 775,793.10 × 479,870.60
  4. Step 4: Simplify right side
    517,195.40x = 372,280,300,372.86
  5. Step 5: Solve for x
    x = 372,280,300,372.86/517,195.40
  6. Step 6: Final answer
    x = 719,805.90

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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.