Home / 863,128.16-1,191,257.20-519,311.60

Finding the Fourth Proportional to 863,128.16, 1,191,257.20 and 519,311.60

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Solution

The fourth proportional to 863,128.16, 1,191,257.20 and 519,311.60 is: 716,734.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,128.16 : 1,191,257.20 = 519,311.60 : x
  2. Step 2: Convert to fraction form
    863,128.16/1,191,257.20 = 519,311.60/x
  3. Step 3: Cross multiply
    863,128.16x = 1,191,257.20 × 519,311.60
  4. Step 4: Simplify right side
    863,128.16x = 618,633,682,543.52
  5. Step 5: Solve for x
    x = 618,633,682,543.52/863,128.16
  6. Step 6: Final answer
    x = 716,734.44

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Double scale
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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.