Home / 1,389,491.20-2,084,042.40-442,957.60

Finding the Fourth Proportional to 1,389,491.20, 2,084,042.40 and 442,957.60

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Solution

The fourth proportional to 1,389,491.20, 2,084,042.40 and 442,957.60 is: 664,374.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,491.20 : 2,084,042.40 = 442,957.60 : x
  2. Step 2: Convert to fraction form
    1,389,491.20/2,084,042.40 = 442,957.60/x
  3. Step 3: Cross multiply
    1,389,491.20x = 2,084,042.40 × 442,957.60
  4. Step 4: Simplify right side
    1,389,491.20x = 923,142,419,802.24
  5. Step 5: Solve for x
    x = 923,142,419,802.24/1,389,491.20
  6. Step 6: Final answer
    x = 664,374.43

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Double scale
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Similar ratio
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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.