Home / 919,072.80-1,378,609.20-706,496.40

Finding the Fourth Proportional to 919,072.80, 1,378,609.20 and 706,496.40

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Solution

The fourth proportional to 919,072.80, 1,378,609.20 and 706,496.40 is: 1,059,744.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,072.80 : 1,378,609.20 = 706,496.40 : x
  2. Step 2: Convert to fraction form
    919,072.80/1,378,609.20 = 706,496.40/x
  3. Step 3: Cross multiply
    919,072.80x = 1,378,609.20 × 706,496.40
  4. Step 4: Simplify right side
    919,072.80x = 973,982,436,806.88
  5. Step 5: Solve for x
    x = 973,982,436,806.88/919,072.80
  6. Step 6: Final answer
    x = 1,059,744.60

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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.