Home / 769,403.40-1,154,105.10-437,627.40

Finding the Fourth Proportional to 769,403.40, 1,154,105.10 and 437,627.40

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Solution

The fourth proportional to 769,403.40, 1,154,105.10 and 437,627.40 is: 656,441.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,403.40 : 1,154,105.10 = 437,627.40 : x
  2. Step 2: Convert to fraction form
    769,403.40/1,154,105.10 = 437,627.40/x
  3. Step 3: Cross multiply
    769,403.40x = 1,154,105.10 × 437,627.40
  4. Step 4: Simplify right side
    769,403.40x = 505,068,014,239.74
  5. Step 5: Solve for x
    x = 505,068,014,239.74/769,403.40
  6. Step 6: Final answer
    x = 656,441.10

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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.