Home / 831,309.81-1,147,206.85-449,336.59

Finding the Fourth Proportional to 831,309.81, 1,147,206.85 and 449,336.59

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Solution

The fourth proportional to 831,309.81, 1,147,206.85 and 449,336.59 is: 620,084.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,309.81 : 1,147,206.85 = 449,336.59 : x
  2. Step 2: Convert to fraction form
    831,309.81/1,147,206.85 = 449,336.59/x
  3. Step 3: Cross multiply
    831,309.81x = 1,147,206.85 × 449,336.59
  4. Step 4: Simplify right side
    831,309.81x = 515,482,014,003.64
  5. Step 5: Solve for x
    x = 515,482,014,003.64/831,309.81
  6. Step 6: Final answer
    x = 620,084.12

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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.