Home / 763,487.80-1,145,231.70-693,446.20

Finding the Fourth Proportional to 763,487.80, 1,145,231.70 and 693,446.20

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Solution

The fourth proportional to 763,487.80, 1,145,231.70 and 693,446.20 is: 1,040,169.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,487.80 : 1,145,231.70 = 693,446.20 : x
  2. Step 2: Convert to fraction form
    763,487.80/1,145,231.70 = 693,446.20/x
  3. Step 3: Cross multiply
    763,487.80x = 1,145,231.70 × 693,446.20
  4. Step 4: Simplify right side
    763,487.80x = 794,156,570,484.54
  5. Step 5: Solve for x
    x = 794,156,570,484.54/763,487.80
  6. Step 6: Final answer
    x = 1,040,169.30

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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.