Home / 831,457.80-1,247,186.70-270,492.30

Finding the Fourth Proportional to 831,457.80, 1,247,186.70 and 270,492.30

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Solution

The fourth proportional to 831,457.80, 1,247,186.70 and 270,492.30 is: 405,738.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,457.80 : 1,247,186.70 = 270,492.30 : x
  2. Step 2: Convert to fraction form
    831,457.80/1,247,186.70 = 270,492.30/x
  3. Step 3: Cross multiply
    831,457.80x = 1,247,186.70 × 270,492.30
  4. Step 4: Simplify right side
    831,457.80x = 337,354,399,012.41
  5. Step 5: Solve for x
    x = 337,354,399,012.41/831,457.80
  6. Step 6: Final answer
    x = 405,738.45

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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.