Home / 1,121,405.40-1,682,108.10-531,581.40

Finding the Fourth Proportional to 1,121,405.40, 1,682,108.10 and 531,581.40

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Solution

The fourth proportional to 1,121,405.40, 1,682,108.10 and 531,581.40 is: 797,372.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,405.40 : 1,682,108.10 = 531,581.40 : x
  2. Step 2: Convert to fraction form
    1,121,405.40/1,682,108.10 = 531,581.40/x
  3. Step 3: Cross multiply
    1,121,405.40x = 1,682,108.10 × 531,581.40
  4. Step 4: Simplify right side
    1,121,405.40x = 894,177,378,749.34
  5. Step 5: Solve for x
    x = 894,177,378,749.34/1,121,405.40
  6. Step 6: Final answer
    x = 797,372.10

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Double scale
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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.