Home / 769,774.80-1,154,662.20-437,998.80

Finding the Fourth Proportional to 769,774.80, 1,154,662.20 and 437,998.80

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Solution

The fourth proportional to 769,774.80, 1,154,662.20 and 437,998.80 is: 656,998.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,774.80 : 1,154,662.20 = 437,998.80 : x
  2. Step 2: Convert to fraction form
    769,774.80/1,154,662.20 = 437,998.80/x
  3. Step 3: Cross multiply
    769,774.80x = 1,154,662.20 × 437,998.80
  4. Step 4: Simplify right side
    769,774.80x = 505,740,658,005.36
  5. Step 5: Solve for x
    x = 505,740,658,005.36/769,774.80
  6. Step 6: Final answer
    x = 656,998.20

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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.