Home / 1,279,406.40-1,919,109.60-649,550.40

Finding the Fourth Proportional to 1,279,406.40, 1,919,109.60 and 649,550.40

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Solution

The fourth proportional to 1,279,406.40, 1,919,109.60 and 649,550.40 is: 974,325.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,406.40 : 1,919,109.60 = 649,550.40 : x
  2. Step 2: Convert to fraction form
    1,279,406.40/1,919,109.60 = 649,550.40/x
  3. Step 3: Cross multiply
    1,279,406.40x = 1,919,109.60 × 649,550.40
  4. Step 4: Simplify right side
    1,279,406.40x = 1,246,558,408,323.84
  5. Step 5: Solve for x
    x = 1,246,558,408,323.84/1,279,406.40
  6. Step 6: Final answer
    x = 974,325.60

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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.