Home / 863,407.20-1,295,110.80-628,399.20

Finding the Fourth Proportional to 863,407.20, 1,295,110.80 and 628,399.20

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Solution

The fourth proportional to 863,407.20, 1,295,110.80 and 628,399.20 is: 942,598.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,407.20 : 1,295,110.80 = 628,399.20 : x
  2. Step 2: Convert to fraction form
    863,407.20/1,295,110.80 = 628,399.20/x
  3. Step 3: Cross multiply
    863,407.20x = 1,295,110.80 × 628,399.20
  4. Step 4: Simplify right side
    863,407.20x = 813,846,590,631.36
  5. Step 5: Solve for x
    x = 813,846,590,631.36/863,407.20
  6. Step 6: Final answer
    x = 942,598.80

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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.