Home / 1,311,035.09-1,968,363.86-905,275.04

Finding the Fourth Proportional to 1,311,035.09, 1,968,363.86 and 905,275.04

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Solution

The fourth proportional to 1,311,035.09, 1,968,363.86 and 905,275.04 is: 1,359,163.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,035.09 : 1,968,363.86 = 905,275.04 : x
  2. Step 2: Convert to fraction form
    1,311,035.09/1,968,363.86 = 905,275.04/x
  3. Step 3: Cross multiply
    1,311,035.09x = 1,968,363.86 × 905,275.04
  4. Step 4: Simplify right side
    1,311,035.09x = 1,781,910,657,727.86
  5. Step 5: Solve for x
    x = 1,781,910,657,727.86/1,311,035.09
  6. Step 6: Final answer
    x = 1,359,163.21

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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.