Home / 1,214,416.40-1,821,624.60-978,220.40

Finding the Fourth Proportional to 1,214,416.40, 1,821,624.60 and 978,220.40

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Solution

The fourth proportional to 1,214,416.40, 1,821,624.60 and 978,220.40 is: 1,467,330.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214,416.40 : 1,821,624.60 = 978,220.40 : x
  2. Step 2: Convert to fraction form
    1,214,416.40/1,821,624.60 = 978,220.40/x
  3. Step 3: Cross multiply
    1,214,416.40x = 1,821,624.60 × 978,220.40
  4. Step 4: Simplify right side
    1,214,416.40x = 1,781,950,344,861.84
  5. Step 5: Solve for x
    x = 1,781,950,344,861.84/1,214,416.40
  6. Step 6: Final answer
    x = 1,467,330.60

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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.