Home / 831,639.88-1,147,662.28-449,665.84

Finding the Fourth Proportional to 831,639.88, 1,147,662.28 and 449,665.84

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Solution

The fourth proportional to 831,639.88, 1,147,662.28 and 449,665.84 is: 620,538.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,639.88 : 1,147,662.28 = 449,665.84 : x
  2. Step 2: Convert to fraction form
    831,639.88/1,147,662.28 = 449,665.84/x
  3. Step 3: Cross multiply
    831,639.88x = 1,147,662.28 × 449,665.84
  4. Step 4: Simplify right side
    831,639.88x = 516,064,523,172.52
  5. Step 5: Solve for x
    x = 516,064,523,172.52/831,639.88
  6. Step 6: Final answer
    x = 620,538.45

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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.