Home / 917,401.20-1,372,213.80-823,311.60

Finding the Fourth Proportional to 917,401.20, 1,372,213.80 and 823,311.60

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Solution

The fourth proportional to 917,401.20, 1,372,213.80 and 823,311.60 is: 1,231,478.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,401.20 : 1,372,213.80 = 823,311.60 : x
  2. Step 2: Convert to fraction form
    917,401.20/1,372,213.80 = 823,311.60/x
  3. Step 3: Cross multiply
    917,401.20x = 1,372,213.80 × 823,311.60
  4. Step 4: Simplify right side
    917,401.20x = 1,129,759,539,220.08
  5. Step 5: Solve for x
    x = 1,129,759,539,220.08/917,401.20
  6. Step 6: Final answer
    x = 1,231,478.16

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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.