Home / 876,883.60-1,315,325.40-640,687.60

Finding the Fourth Proportional to 876,883.60, 1,315,325.40 and 640,687.60

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Solution

The fourth proportional to 876,883.60, 1,315,325.40 and 640,687.60 is: 961,031.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,883.60 : 1,315,325.40 = 640,687.60 : x
  2. Step 2: Convert to fraction form
    876,883.60/1,315,325.40 = 640,687.60/x
  3. Step 3: Cross multiply
    876,883.60x = 1,315,325.40 × 640,687.60
  4. Step 4: Simplify right side
    876,883.60x = 842,712,673,745.04
  5. Step 5: Solve for x
    x = 842,712,673,745.04/876,883.60
  6. Step 6: Final answer
    x = 961,031.40

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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.