Home / 831,830.09-1,147,928.97-449,856.87

Finding the Fourth Proportional to 831,830.09, 1,147,928.97 and 449,856.87

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Solution

The fourth proportional to 831,830.09, 1,147,928.97 and 449,856.87 is: 620,804.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,830.09 : 1,147,928.97 = 449,856.87 : x
  2. Step 2: Convert to fraction form
    831,830.09/1,147,928.97 = 449,856.87/x
  3. Step 3: Cross multiply
    831,830.09x = 1,147,928.97 × 449,856.87
  4. Step 4: Simplify right side
    831,830.09x = 516,403,733,426.52
  5. Step 5: Solve for x
    x = 516,403,733,426.52/831,830.09
  6. Step 6: Final answer
    x = 620,804.34

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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.