Home / 821,409.80-1,232,114.70-731,208.20

Finding the Fourth Proportional to 821,409.80, 1,232,114.70 and 731,208.20

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Solution

The fourth proportional to 821,409.80, 1,232,114.70 and 731,208.20 is: 1,096,812.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,409.80 : 1,232,114.70 = 731,208.20 : x
  2. Step 2: Convert to fraction form
    821,409.80/1,232,114.70 = 731,208.20/x
  3. Step 3: Cross multiply
    821,409.80x = 1,232,114.70 × 731,208.20
  4. Step 4: Simplify right side
    821,409.80x = 900,932,371,980.54
  5. Step 5: Solve for x
    x = 900,932,371,980.54/821,409.80
  6. Step 6: Final answer
    x = 1,096,812.30

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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.