Home / 891,450.66-1,230,179.76-498,978.12

Finding the Fourth Proportional to 891,450.66, 1,230,179.76 and 498,978.12

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Solution

The fourth proportional to 891,450.66, 1,230,179.76 and 498,978.12 is: 688,577.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,450.66 : 1,230,179.76 = 498,978.12 : x
  2. Step 2: Convert to fraction form
    891,450.66/1,230,179.76 = 498,978.12/x
  3. Step 3: Cross multiply
    891,450.66x = 1,230,179.76 × 498,978.12
  4. Step 4: Simplify right side
    891,450.66x = 613,832,783,906.85
  5. Step 5: Solve for x
    x = 613,832,783,906.85/891,450.66
  6. Step 6: Final answer
    x = 688,577.41

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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.