Home / 831,307.81-1,147,204.09-449,334.59

Finding the Fourth Proportional to 831,307.81, 1,147,204.09 and 449,334.59

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Solution

The fourth proportional to 831,307.81, 1,147,204.09 and 449,334.59 is: 620,081.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,307.81 : 1,147,204.09 = 449,334.59 : x
  2. Step 2: Convert to fraction form
    831,307.81/1,147,204.09 = 449,334.59/x
  3. Step 3: Cross multiply
    831,307.81x = 1,147,204.09 × 449,334.59
  4. Step 4: Simplify right side
    831,307.81x = 515,478,479,426.47
  5. Step 5: Solve for x
    x = 515,478,479,426.47/831,307.81
  6. Step 6: Final answer
    x = 620,081.36

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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.