Home / 641,982,073.20-962,973,109.80-412,399,561.20

Finding the Fourth Proportional to 641,982,073.20, 962,973,109.80 and 412,399,561.20

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Solution

The fourth proportional to 641,982,073.20, 962,973,109.80 and 412,399,561.20 is: 618,599,341.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,982,073.20 : 962,973,109.80 = 412,399,561.20 : x
  2. Step 2: Convert to fraction form
    641,982,073.20/962,973,109.80 = 412,399,561.20/x
  3. Step 3: Cross multiply
    641,982,073.20x = 962,973,109.80 × 412,399,561.20
  4. Step 4: Simplify right side
    641,982,073.20x = 397,129,687,928,919,360
  5. Step 5: Solve for x
    x = 397,129,687,928,919,360/641,982,073.20
  6. Step 6: Final answer
    x = 618,599,341.80

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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.