Home / 831,307.80-1,147,204.08-449,334.60

Finding the Fourth Proportional to 831,307.80, 1,147,204.08 and 449,334.60

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Solution

The fourth proportional to 831,307.80, 1,147,204.08 and 449,334.60 is: 620,081.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,307.80 : 1,147,204.08 = 449,334.60 : x
  2. Step 2: Convert to fraction form
    831,307.80/1,147,204.08 = 449,334.60/x
  3. Step 3: Cross multiply
    831,307.80x = 1,147,204.08 × 449,334.60
  4. Step 4: Simplify right side
    831,307.80x = 515,478,486,405.17
  5. Step 5: Solve for x
    x = 515,478,486,405.17/831,307.80
  6. Step 6: Final answer
    x = 620,081.38

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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.