Home / 1,288,187.20-1,932,280.80-908,305.30

Finding the Fourth Proportional to 1,288,187.20, 1,932,280.80 and 908,305.30

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Solution

The fourth proportional to 1,288,187.20, 1,932,280.80 and 908,305.30 is: 1,362,457.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,187.20 : 1,932,280.80 = 908,305.30 : x
  2. Step 2: Convert to fraction form
    1,288,187.20/1,932,280.80 = 908,305.30/x
  3. Step 3: Cross multiply
    1,288,187.20x = 1,932,280.80 × 908,305.30
  4. Step 4: Simplify right side
    1,288,187.20x = 1,755,100,891,728.24
  5. Step 5: Solve for x
    x = 1,755,100,891,728.24/1,288,187.20
  6. Step 6: Final answer
    x = 1,362,457.95

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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.