Home / 769,830.60-1,152,996.30-486,395.40

Finding the Fourth Proportional to 769,830.60, 1,152,996.30 and 486,395.40

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Solution

The fourth proportional to 769,830.60, 1,152,996.30 and 486,395.40 is: 728,487.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,830.60 : 1,152,996.30 = 486,395.40 : x
  2. Step 2: Convert to fraction form
    769,830.60/1,152,996.30 = 486,395.40/x
  3. Step 3: Cross multiply
    769,830.60x = 1,152,996.30 × 486,395.40
  4. Step 4: Simplify right side
    769,830.60x = 560,812,096,537.02
  5. Step 5: Solve for x
    x = 560,812,096,537.02/769,830.60
  6. Step 6: Final answer
    x = 728,487.67

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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.