Home / 646,563.20-892,496.64-555,555.20

Finding the Fourth Proportional to 646,563.20, 892,496.64 and 555,555.20

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Solution

The fourth proportional to 646,563.20, 892,496.64 and 555,555.20 is: 766,871.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,563.20 : 892,496.64 = 555,555.20 : x
  2. Step 2: Convert to fraction form
    646,563.20/892,496.64 = 555,555.20/x
  3. Step 3: Cross multiply
    646,563.20x = 892,496.64 × 555,555.20
  4. Step 4: Simplify right side
    646,563.20x = 495,831,149,334.53
  5. Step 5: Solve for x
    x = 495,831,149,334.53/646,563.20
  6. Step 6: Final answer
    x = 766,871.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.