Home / 769,386.80-1,154,080.20-693,279.20

Finding the Fourth Proportional to 769,386.80, 1,154,080.20 and 693,279.20

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Solution

The fourth proportional to 769,386.80, 1,154,080.20 and 693,279.20 is: 1,039,918.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,386.80 : 1,154,080.20 = 693,279.20 : x
  2. Step 2: Convert to fraction form
    769,386.80/1,154,080.20 = 693,279.20/x
  3. Step 3: Cross multiply
    769,386.80x = 1,154,080.20 × 693,279.20
  4. Step 4: Simplify right side
    769,386.80x = 800,099,797,791.84
  5. Step 5: Solve for x
    x = 800,099,797,791.84/769,386.80
  6. Step 6: Final answer
    x = 1,039,918.80

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Double scale
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Similar ratio
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1.5x scale

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.