Home / 1,389,935.20-2,084,902.80-443,401.60

Finding the Fourth Proportional to 1,389,935.20, 2,084,902.80 and 443,401.60

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Solution

The fourth proportional to 1,389,935.20, 2,084,902.80 and 443,401.60 is: 665,102.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,935.20 : 2,084,902.80 = 443,401.60 : x
  2. Step 2: Convert to fraction form
    1,389,935.20/2,084,902.80 = 443,401.60/x
  3. Step 3: Cross multiply
    1,389,935.20x = 2,084,902.80 × 443,401.60
  4. Step 4: Simplify right side
    1,389,935.20x = 924,449,237,364.48
  5. Step 5: Solve for x
    x = 924,449,237,364.48/1,389,935.20
  6. Step 6: Final answer
    x = 665,102.40

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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.