Home / 1,389,805.20-2,084,513.40-443,271.60

Finding the Fourth Proportional to 1,389,805.20, 2,084,513.40 and 443,271.60

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Solution

The fourth proportional to 1,389,805.20, 2,084,513.40 and 443,271.60 is: 664,845.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,805.20 : 2,084,513.40 = 443,271.60 : x
  2. Step 2: Convert to fraction form
    1,389,805.20/2,084,513.40 = 443,271.60/x
  3. Step 3: Cross multiply
    1,389,805.20x = 2,084,513.40 × 443,271.60
  4. Step 4: Simplify right side
    1,389,805.20x = 924,005,590,039.44
  5. Step 5: Solve for x
    x = 924,005,590,039.44/1,389,805.20
  6. Step 6: Final answer
    x = 664,845.40

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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.