Home / 911,991.14-1,368,133.71-280,904.66

Finding the Fourth Proportional to 911,991.14, 1,368,133.71 and 280,904.66

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Solution

The fourth proportional to 911,991.14, 1,368,133.71 and 280,904.66 is: 421,402.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,991.14 : 1,368,133.71 = 280,904.66 : x
  2. Step 2: Convert to fraction form
    911,991.14/1,368,133.71 = 280,904.66/x
  3. Step 3: Cross multiply
    911,991.14x = 1,368,133.71 × 280,904.66
  4. Step 4: Simplify right side
    911,991.14x = 384,315,134,642.09
  5. Step 5: Solve for x
    x = 384,315,134,642.09/911,991.14
  6. Step 6: Final answer
    x = 421,402.27

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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.