Home / 769,748.40-1,154,622.60-687,079.80

Finding the Fourth Proportional to 769,748.40, 1,154,622.60 and 687,079.80

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Solution

The fourth proportional to 769,748.40, 1,154,622.60 and 687,079.80 is: 1,030,619.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,748.40 : 1,154,622.60 = 687,079.80 : x
  2. Step 2: Convert to fraction form
    769,748.40/1,154,622.60 = 687,079.80/x
  3. Step 3: Cross multiply
    769,748.40x = 1,154,622.60 × 687,079.80
  4. Step 4: Simplify right side
    769,748.40x = 793,317,865,083.48
  5. Step 5: Solve for x
    x = 793,317,865,083.48/769,748.40
  6. Step 6: Final answer
    x = 1,030,619.70

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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.