Home / 976,863.40-1,465,295.10-640,940.20

Finding the Fourth Proportional to 976,863.40, 1,465,295.10 and 640,940.20

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Solution

The fourth proportional to 976,863.40, 1,465,295.10 and 640,940.20 is: 961,410.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    976,863.40 : 1,465,295.10 = 640,940.20 : x
  2. Step 2: Convert to fraction form
    976,863.40/1,465,295.10 = 640,940.20/x
  3. Step 3: Cross multiply
    976,863.40x = 1,465,295.10 × 640,940.20
  4. Step 4: Simplify right side
    976,863.40x = 939,166,534,453.02
  5. Step 5: Solve for x
    x = 939,166,534,453.02/976,863.40
  6. Step 6: Final answer
    x = 961,410.30

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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.