Home / 863,571.28-1,191,321.64-561,655.12

Finding the Fourth Proportional to 863,571.28, 1,191,321.64 and 561,655.12

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Solution

The fourth proportional to 863,571.28, 1,191,321.64 and 561,655.12 is: 774,819.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,571.28 : 1,191,321.64 = 561,655.12 : x
  2. Step 2: Convert to fraction form
    863,571.28/1,191,321.64 = 561,655.12/x
  3. Step 3: Cross multiply
    863,571.28x = 1,191,321.64 × 561,655.12
  4. Step 4: Simplify right side
    863,571.28x = 669,111,898,672.80
  5. Step 5: Solve for x
    x = 669,111,898,672.80/863,571.28
  6. Step 6: Final answer
    x = 774,819.54

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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.