Home / 720,800.88-1,081,186.74-215,363.40

Finding the Fourth Proportional to 720,800.88, 1,081,186.74 and 215,363.40

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Solution

The fourth proportional to 720,800.88, 1,081,186.74 and 215,363.40 is: 323,040.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,800.88 : 1,081,186.74 = 215,363.40 : x
  2. Step 2: Convert to fraction form
    720,800.88/1,081,186.74 = 215,363.40/x
  3. Step 3: Cross multiply
    720,800.88x = 1,081,186.74 × 215,363.40
  4. Step 4: Simplify right side
    720,800.88x = 232,848,052,361.32
  5. Step 5: Solve for x
    x = 232,848,052,361.32/720,800.88
  6. Step 6: Final answer
    x = 323,040.74

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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.