Home / 1,085,609.40-1,627,247.70-411,430.20

Finding the Fourth Proportional to 1,085,609.40, 1,627,247.70 and 411,430.20

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Solution

The fourth proportional to 1,085,609.40, 1,627,247.70 and 411,430.20 is: 616,703.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,085,609.40 : 1,627,247.70 = 411,430.20 : x
  2. Step 2: Convert to fraction form
    1,085,609.40/1,627,247.70 = 411,430.20/x
  3. Step 3: Cross multiply
    1,085,609.40x = 1,627,247.70 × 411,430.20
  4. Step 4: Simplify right side
    1,085,609.40x = 669,498,846,660.54
  5. Step 5: Solve for x
    x = 669,498,846,660.54/1,085,609.40
  6. Step 6: Final answer
    x = 616,703.25

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Double scale
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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.