Home / 1,027,731.40-1,541,520.30-428,537.80

Finding the Fourth Proportional to 1,027,731.40, 1,541,520.30 and 428,537.80

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Solution

The fourth proportional to 1,027,731.40, 1,541,520.30 and 428,537.80 is: 642,774.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,027,731.40 : 1,541,520.30 = 428,537.80 : x
  2. Step 2: Convert to fraction form
    1,027,731.40/1,541,520.30 = 428,537.80/x
  3. Step 3: Cross multiply
    1,027,731.40x = 1,541,520.30 × 428,537.80
  4. Step 4: Simplify right side
    1,027,731.40x = 660,599,718,017.34
  5. Step 5: Solve for x
    x = 660,599,718,017.34/1,027,731.40
  6. Step 6: Final answer
    x = 642,774.68

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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.