Home / 1,280,051.92-1,919,435.03-426,821.51

Finding the Fourth Proportional to 1,280,051.92, 1,919,435.03 and 426,821.51

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Solution

The fourth proportional to 1,280,051.92, 1,919,435.03 and 426,821.51 is: 640,017.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,051.92 : 1,919,435.03 = 426,821.51 : x
  2. Step 2: Convert to fraction form
    1,280,051.92/1,919,435.03 = 426,821.51/x
  3. Step 3: Cross multiply
    1,280,051.92x = 1,919,435.03 × 426,821.51
  4. Step 4: Simplify right side
    1,280,051.92x = 819,256,162,116.56
  5. Step 5: Solve for x
    x = 819,256,162,116.56/1,280,051.92
  6. Step 6: Final answer
    x = 640,017.92

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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.