Home / 1,027,628.90-1,541,366.55-428,435.30

Finding the Fourth Proportional to 1,027,628.90, 1,541,366.55 and 428,435.30

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Solution

The fourth proportional to 1,027,628.90, 1,541,366.55 and 428,435.30 is: 642,620.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,027,628.90 : 1,541,366.55 = 428,435.30 : x
  2. Step 2: Convert to fraction form
    1,027,628.90/1,541,366.55 = 428,435.30/x
  3. Step 3: Cross multiply
    1,027,628.90x = 1,541,366.55 × 428,435.30
  4. Step 4: Simplify right side
    1,027,628.90x = 660,375,840,259.22
  5. Step 5: Solve for x
    x = 660,375,840,259.22/1,027,628.90
  6. Step 6: Final answer
    x = 642,620.93

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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.