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Finding the Fourth Proportional to 662,132.70, 993,609.45 and 346,815.90

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Solution

The fourth proportional to 662,132.70, 993,609.45 and 346,815.90 is: 520,438.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,132.70 : 993,609.45 = 346,815.90 : x
  2. Step 2: Convert to fraction form
    662,132.70/993,609.45 = 346,815.90/x
  3. Step 3: Cross multiply
    662,132.70x = 993,609.45 × 346,815.90
  4. Step 4: Simplify right side
    662,132.70x = 344,599,555,650.26
  5. Step 5: Solve for x
    x = 344,599,555,650.26/662,132.70
  6. Step 6: Final answer
    x = 520,438.81

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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.