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Finding the Fourth Proportional to 434,618.70, 650,372.85 and 397,293.90

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Solution

The fourth proportional to 434,618.70, 650,372.85 and 397,293.90 is: 594,519.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,618.70 : 650,372.85 = 397,293.90 : x
  2. Step 2: Convert to fraction form
    434,618.70/650,372.85 = 397,293.90/x
  3. Step 3: Cross multiply
    434,618.70x = 650,372.85 × 397,293.90
  4. Step 4: Simplify right side
    434,618.70x = 258,389,166,030.62
  5. Step 5: Solve for x
    x = 258,389,166,030.62/434,618.70
  6. Step 6: Final answer
    x = 594,519.21

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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.