Home / 1,392,874.79-1,922,247.25-781,223.74

Finding the Fourth Proportional to 1,392,874.79, 1,922,247.25 and 781,223.74

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Solution

The fourth proportional to 1,392,874.79, 1,922,247.25 and 781,223.74 is: 1,078,133.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,874.79 : 1,922,247.25 = 781,223.74 : x
  2. Step 2: Convert to fraction form
    1,392,874.79/1,922,247.25 = 781,223.74/x
  3. Step 3: Cross multiply
    1,392,874.79x = 1,922,247.25 × 781,223.74
  4. Step 4: Simplify right side
    1,392,874.79x = 1,501,705,179,091.04
  5. Step 5: Solve for x
    x = 1,501,705,179,091.04/1,392,874.79
  6. Step 6: Final answer
    x = 1,078,133.65

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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.