Home / 1,420,339.28-2,128,083.96-781,178

Finding the Fourth Proportional to 1,420,339.28, 2,128,083.96 and 781,178

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Solution

The fourth proportional to 1,420,339.28, 2,128,083.96 and 781,178 is: 1,170,433.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,339.28 : 2,128,083.96 = 781,178 : x
  2. Step 2: Convert to fraction form
    1,420,339.28/2,128,083.96 = 781,178/x
  3. Step 3: Cross multiply
    1,420,339.28x = 2,128,083.96 × 781,178
  4. Step 4: Simplify right side
    1,420,339.28x = 1,662,412,371,704.88
  5. Step 5: Solve for x
    x = 1,662,412,371,704.88/1,420,339.28
  6. Step 6: Final answer
    x = 1,170,433.29

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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.