Home / 763,414.40-1,145,121.60-658,438.40

Finding the Fourth Proportional to 763,414.40, 1,145,121.60 and 658,438.40

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Solution

The fourth proportional to 763,414.40, 1,145,121.60 and 658,438.40 is: 987,657.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,414.40 : 1,145,121.60 = 658,438.40 : x
  2. Step 2: Convert to fraction form
    763,414.40/1,145,121.60 = 658,438.40/x
  3. Step 3: Cross multiply
    763,414.40x = 1,145,121.60 × 658,438.40
  4. Step 4: Simplify right side
    763,414.40x = 753,992,034,109.44
  5. Step 5: Solve for x
    x = 753,992,034,109.44/763,414.40
  6. Step 6: Final answer
    x = 987,657.60

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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.