Home / 831,460.80-1,247,191.20-270,495.30

Finding the Fourth Proportional to 831,460.80, 1,247,191.20 and 270,495.30

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Solution

The fourth proportional to 831,460.80, 1,247,191.20 and 270,495.30 is: 405,742.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,460.80 : 1,247,191.20 = 270,495.30 : x
  2. Step 2: Convert to fraction form
    831,460.80/1,247,191.20 = 270,495.30/x
  3. Step 3: Cross multiply
    831,460.80x = 1,247,191.20 × 270,495.30
  4. Step 4: Simplify right side
    831,460.80x = 337,359,357,801.36
  5. Step 5: Solve for x
    x = 337,359,357,801.36/831,460.80
  6. Step 6: Final answer
    x = 405,742.95

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.